task-l.1

2026-06-22 10:59:31 +07:00
parent b154a8de33
commit 771ebfc308
23 changed files with 6113 additions and 39 deletions
--- a/docs/adr/0014-crm-multi-role-user-assignment.md
+++ b/docs/adr/0014-crm-multi-role-user-assignment.md
@@ -0,0 +1,72 @@
+# ADR 0014: CRM Multi-Role User Assignment
+
+## Status
+
+Accepted
+
+## Context
+
+Task L introduced CRM role profiles and resolved CRM access, but authorization still depended on a single `memberships.businessRole` value per organization membership.
+
+That model is too restrictive for real CRM operations because one user may need multiple CRM responsibilities inside the same organization, such as:
+
+- `sales` + `sales_manager`
+- `crm_admin` + `department_manager`
+- `marketing` + `sales_support`
+
+We need to keep `memberships` as organization access while moving CRM authorization into its own persistent model.
+
+## Decision
+
+We adopt:
+
+- `memberships` as organization/workspace access
+- `crm_user_role_assignments` as CRM authorization
+
+One user can have many CRM role assignments per organization.
+
+Each assignment stores:
+
+- `roleProfileId`
+- branch scope mode and branch IDs
+- product-type scope mode and product-type IDs
+- primary/display flag
+- active/inactive lifecycle
+
+Effective CRM access is resolved from:
+
+1. membership role
+2. all active CRM role assignments
+3. all assigned CRM role profile permissions
+4. direct membership permissions
+
+Rules:
+
+- permissions are the union of all active role-profile permissions plus membership permissions
+- branch scope is the union of active assignment scopes unless any active assignment grants `all`
+- product-type scope is the union of active assignment scopes unless any active assignment grants `all`
+- approval authority uses the highest active authority among assigned roles
+- primary role is display-only and does not limit the permission union
+- `memberships.businessRole` remains temporarily as a compatibility fallback only when no active CRM role assignment exists
+
+## Consequences
+
+### Positive
+
+- supports realistic multi-role CRM operation
+- separates organization access from CRM-specific authorization
+- allows per-role scope assignment per user
+- keeps rollout compatible with existing membership data through lazy backfill
+
+### Negative
+
+- resolver complexity increases
+- old `memberships.businessRole` semantics must be maintained during transition
+- UI and audit coverage must handle assignment lifecycle, not just role-profile maintenance
+
+## Migration Strategy
+
+- create `crm_user_role_assignments`
+- backfill one primary assignment from `memberships.businessRole` when possible
+- treat `memberships.businessRole` as deprecated for CRM authorization after Task L.1
+- keep the column until user-management and downstream integrations fully move to assignment-based CRM access
--- a/docs/implementation/task-l1-crm-multi-role-user-assignment.md
+++ b/docs/implementation/task-l1-crm-multi-role-user-assignment.md
@@ -0,0 +1,46 @@
+# Task L.1: CRM Multi-Role User Assignment
+
+## Summary
+
+Task L.1 extends the CRM authorization foundation so one user can hold multiple CRM role assignments inside the same organization.
+
+## Implemented
+
+- Added `crm_user_role_assignments` schema for CRM-specific authorization rows
+- Added assignment permissions:
+  - `crm.role.assignment.read`
+  - `crm.role.assignment.create`
+  - `crm.role.assignment.update`
+  - `crm.role.assignment.delete`
+  - `crm.role.assignment.manage`
+- Added lazy compatibility backfill from `memberships.businessRole` into CRM role assignments
+- Updated CRM access resolution to:
+  - union permissions across all active assignments
+  - union branch/product scope across assignments
+  - choose the most permissive ownership scope
+  - choose the highest approval authority
+  - use primary role for display only
+- Added `CRM Settings > User Role Assignments`
+- Added assignment API routes:
+  - `GET /api/crm/settings/user-role-assignments`
+  - `POST /api/crm/settings/user-role-assignments`
+  - `PATCH /api/crm/settings/user-role-assignments/[id]`
+  - `DELETE /api/crm/settings/user-role-assignments/[id]`
+- Added audit logging for `crm_user_role_assignment`
+- Added ADR `0014-crm-multi-role-user-assignment`
+
+## Compatibility
+
+- `memberships.businessRole` remains in place
+- when no active CRM role assignment exists, resolver still falls back safely
+- when role assignments exist, CRM authorization no longer treats `memberships.businessRole` as the primary source
+
+## Verification
+
+- Run: `npx tsc --noEmit`
+
+## Remaining Risks
+
+- user-creation and user-edit flows still center around legacy `memberships.businessRole`
+- some CRM modules beyond the current resolver consumers may still need deeper scenario verification with mixed-role fixtures
+- a dedicated one-shot operational migration script can still be useful even though lazy backfill is active
--- a/docs/implementation/technical-debt.md
+++ b/docs/implementation/technical-debt.md
@@ -365,6 +365,19 @@ Future:
 - define whether mixed-role users see own, team, or organization scope by default
 - keep exports aligned with the same scope policy once enforced

+## After Task L.1
+
+### Deprecated membership.businessRole for CRM authorization
+
+Current:
+`memberships.businessRole` is now a compatibility fallback only. Primary CRM authorization moves to `crm_user_role_assignments`.
+
+Future:
+
+- remove CRM authorization dependence on `memberships.businessRole` entirely
+- update user-management flows to assign CRM roles through assignment rows instead of membership payloads
+- remove the deprecated column only after all CRM modules and admin flows have migrated
+
 ### Global project-party filter coverage

 Task J adds a global `Project Party Role` filter in the dashboard UI, but the strongest enforcement today is in revenue analytics and export sections.
--- a/drizzle/0014_bored_valkyrie.sql
+++ b/drizzle/0014_bored_valkyrie.sql
@@ -0,0 +1,19 @@
+CREATE TABLE "crm_user_role_assignments" (
+	"id" text PRIMARY KEY NOT NULL,
+	"organization_id" text NOT NULL,
+	"user_id" text NOT NULL,
+	"role_profile_id" text NOT NULL,
+	"branch_scope_mode" text DEFAULT 'inherit' NOT NULL,
+	"branch_scope_ids" text[] DEFAULT '{}' NOT NULL,
+	"product_type_scope_mode" text DEFAULT 'inherit' NOT NULL,
+	"product_type_scope_ids" text[] DEFAULT '{}' NOT NULL,
+	"is_primary" boolean DEFAULT false NOT NULL,
+	"is_active" boolean DEFAULT true NOT NULL,
+	"assigned_by" text NOT NULL,
+	"assigned_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"deleted_at" timestamp with time zone
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX "crm_user_role_assignments_org_user_role_idx" ON "crm_user_role_assignments" USING btree ("organization_id","user_id","role_profile_id");
--- a/drizzle/0014_crm_user_role_assignments.sql
+++ b/drizzle/0014_crm_user_role_assignments.sql
@@ -0,0 +1,20 @@
+CREATE TABLE IF NOT EXISTS "crm_user_role_assignments" (
+  "id" text PRIMARY KEY NOT NULL,
+  "organization_id" text NOT NULL,
+  "user_id" text NOT NULL,
+  "role_profile_id" text NOT NULL,
+  "branch_scope_mode" text DEFAULT 'inherit' NOT NULL,
+  "branch_scope_ids" text[] DEFAULT '{}' NOT NULL,
+  "product_type_scope_mode" text DEFAULT 'inherit' NOT NULL,
+  "product_type_scope_ids" text[] DEFAULT '{}' NOT NULL,
+  "is_primary" boolean DEFAULT false NOT NULL,
+  "is_active" boolean DEFAULT true NOT NULL,
+  "assigned_by" text NOT NULL,
+  "assigned_at" timestamp with time zone DEFAULT now() NOT NULL,
+  "created_at" timestamp with time zone DEFAULT now() NOT NULL,
+  "updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+  "deleted_at" timestamp with time zone
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "crm_user_role_assignments_org_user_role_idx"
+ON "crm_user_role_assignments" ("organization_id", "user_id", "role_profile_id");
--- a/drizzle/meta/0014_snapshot.json
+++ b/drizzle/meta/0014_snapshot.json
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -99,6 +99,13 @@
      "when": 1782097963376,
      "tag": "0013_great_nicolaos",
      "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "7",
+      "when": 1782099743528,
+      "tag": "0014_bored_valkyrie",
+      "breakpoints": true
    }
  ]
 }
--- a/plans/task-l.1.md
+++ b/plans/task-l.1.md
@@ -0,0 +1,575 @@
+# Task L.1: CRM Multi-Role User Assignment & Scope Management
+
+## Objective
+
+Extend Task L authorization foundation so one user can hold multiple CRM role profiles within the same organization.
+
+Business decision:
+
+```txt
+1 User = Many CRM Roles
+```
+
+Examples:
+
+```txt
+Sales Manager + Sales
+CRM Admin + Department Manager
+Sales Support + Marketing
+```
+
+This task adds role assignment persistence, assignment UI, and updates effective CRM access resolution.
+
+---
+
+# Background
+
+Task L introduced:
+
+```txt
+crmRoleProfiles
+memberships.branchScopeIds
+memberships.productTypeScopeIds
+resolved CRM access helper
+CRM Settings > Roles
+```
+
+Current limitation:
+
+```txt
+membership.businessRole = single role
+```
+
+This is not enough for real business operation.
+
+Task L.1 moves CRM role assignment into a dedicated model while keeping membership as organization access.
+
+---
+
+# Target Model
+
+Membership remains organization-level access:
+
+```txt
+memberships
+- userId
+- organizationId
+- role
+- permissions
+```
+
+CRM role assignments become CRM-specific authorization rows:
+
+```txt
+crm_user_role_assignments
+- id
+- organizationId
+- userId
+- roleProfileId
+- branchScopeMode
+- branchScopeIds
+- productTypeScopeMode
+- productTypeScopeIds
+- isPrimary
+- isActive
+- assignedBy
+- assignedAt
+- createdAt
+- updatedAt
+- deletedAt
+```
+
+---
+
+# Scope L1.1 Schema
+
+Add table:
+
+```txt
+crm_user_role_assignments
+```
+
+Fields:
+
+```txt
+id
+organizationId
+userId
+roleProfileId
+
+branchScopeMode
+branchScopeIds
+
+productTypeScopeMode
+productTypeScopeIds
+
+isPrimary
+isActive
+
+assignedBy
+assignedAt
+
+createdAt
+updatedAt
+deletedAt
+```
+
+Recommended scope modes:
+
+```txt
+all
+selected
+none
+inherit
+```
+
+Unique constraint:
+
+```txt
+organizationId + userId + roleProfileId
+```
+
+Rules:
+
+* one user can have many role profiles
+* same role profile cannot be duplicated for the same user/org
+* only one primary CRM role per user/org
+* soft delete supported
+* old `membership.businessRole` remains temporarily for compatibility
+
+---
+
+# Scope L1.2 Migration / Backfill
+
+Backfill existing users.
+
+For each membership:
+
+```txt
+membership.businessRole
+```
+
+create one CRM role assignment matching the role profile.
+
+Rules:
+
+* if businessRole has a matching `crmRoleProfiles.code`, create assignment
+* if no matching role profile exists, skip and log warning
+* set `isPrimary = true`
+* branch/product scope from membership fields if available
+* idempotent migration
+* no duplicate assignments
+
+---
+
+# Scope L1.3 Effective CRM Access Resolver
+
+Update resolved access helper.
+
+Old:
+
+```txt
+membership.businessRole
+
+membership.permissions
+
+roleProfile.permissions
+```
+
+New:
+
+```txt
+membership
+
+all active crm_user_role_assignments
+
+all assigned crmRoleProfiles
+
+direct membership.permissions
+```
+
+Permission behavior:
+
+```txt
+effectivePermissions = union(all roleProfile.permissions, membership.permissions)
+```
+
+Ownership behavior:
+
+Use most permissive access among active role profiles:
+
+```txt
+own
+team
+branch
+organization
+all
+```
+
+Branch scope behavior:
+
+```txt
+if any role has all -> all
+else union selected branchScopeIds
+else none
+```
+
+Product type scope behavior:
+
+```txt
+if any role has all -> all
+else union selected productTypeScopeIds
+else none
+```
+
+Approval authority:
+
+```txt
+effectiveApprovalAuthority = union(all roleProfile.approvalAuthority)
+```
+
+Primary role:
+
+```txt
+used for display only
+not permission limit
+```
+
+---
+
+# Scope L1.4 User Assignment UI
+
+Add page or tab:
+
+```txt
+CRM Settings
+└─ User Role Assignments
+```
+
+or add tab inside existing user detail:
+
+```txt
+Users
+└─ CRM Roles
+```
+
+Recommended UI:
+
+```txt
+User
+Assigned CRM Roles
+Branch Scope
+Product Type Scope
+Primary Role
+Status
+Actions
+```
+
+Actions:
+
+```txt
+Assign Role
+Edit Scope
+Set Primary
+Deactivate Assignment
+Reactivate Assignment
+Remove Assignment
+```
+
+---
+
+# Scope L1.5 Assignment Form
+
+Fields:
+
+```txt
+User
+Role Profile
+Branch Scope Mode
+Branches
+Product Type Scope Mode
+Product Types
+Primary
+Active
+```
+
+Behavior:
+
+* role profile dropdown from active `crmRoleProfiles`
+* branch options from `crm_branch`
+* product type options from `crm_product_type`
+* if scope mode = all, disable selected list
+* if scope mode = selected, require at least one selected option
+* if primary = true, unset other primary role assignments for same user/org
+
+---
+
+# Scope L1.6 API Routes
+
+Add:
+
+```txt
+GET    /api/crm/settings/user-role-assignments
+POST   /api/crm/settings/user-role-assignments
+PATCH  /api/crm/settings/user-role-assignments/[id]
+DELETE /api/crm/settings/user-role-assignments/[id]
+```
+
+Optional:
+
+```txt
+GET /api/crm/settings/users/[userId]/role-assignments
+```
+
+All APIs must:
+
+```txt
+requireOrganizationAccess
+requirePermission("crm.role.assignment.manage")
+filter by organizationId
+audit mutations
+return user-safe errors
+```
+
+---
+
+# Scope L1.7 Permissions
+
+Add permissions:
+
+```txt
+crm.role.assignment.read
+crm.role.assignment.create
+crm.role.assignment.update
+crm.role.assignment.delete
+crm.role.assignment.manage
+```
+
+Grant default to:
+
+```txt
+system_admin
+crm_admin
+```
+
+Optional read to:
+
+```txt
+sales_manager
+department_manager
+top_manager
+```
+
+---
+
+# Scope L1.8 Audit
+
+Audit entity type:
+
+```txt
+crm_user_role_assignment
+```
+
+Actions:
+
+```txt
+create
+update
+delete
+activate
+deactivate
+set_primary
+scope_update
+```
+
+Audit payload should include:
+
+```txt
+userId
+roleProfileId
+branchScopeMode
+branchScopeIds
+productTypeScopeMode
+productTypeScopeIds
+isPrimary
+isActive
+```
+
+---
+
+# Scope L1.9 Compatibility Layer
+
+Keep `membership.businessRole` temporarily.
+
+Rules:
+
+* do not remove column yet
+* do not rely on it when role assignments exist
+* fallback to `membership.businessRole` only when user has no active CRM role assignment
+* document deprecation
+
+Add technical debt:
+
+```txt
+membership.businessRole is deprecated for CRM authorization after Task L.1.
+```
+
+---
+
+# Scope L1.10 Server-Side Enforcement Migration
+
+Update all CRM modules to use resolved multi-role access:
+
+```txt
+Leads
+Enquiries
+Customers
+Contacts
+Quotations
+Approvals
+Dashboard
+Settings
+Reports if present
+```
+
+Priority:
+
+1. Leads / Enquiries
+2. Quotations
+3. Dashboard
+4. Approval
+5. Customers / Contacts
+6. Settings
+
+Rules:
+
+* no UI-only enforcement
+* all list/detail/action routes must check resolved CRM access
+* pricing visibility must remain permission-based
+
+---
+
+# Scope L1.11 Verification Matrix
+
+Create verification cases:
+
+## Marketing + Sales Support
+
+Expected:
+
+```txt
+can view leads
+can create support quotation if permission exists
+cannot approve
+cannot view revenue unless granted
+```
+
+## Sales + Sales Manager
+
+Expected:
+
+```txt
+can see own sales records
+can see team records if manager role scope allows
+can create quotation
+can approve only if role profile has authority
+```
+
+## CRM Admin + Department Manager
+
+Expected:
+
+```txt
+can manage CRM settings
+can approve department-level workflow
+can view configured analytics
+```
+
+## Sales with Crane + Bangkok Scope
+
+Expected:
+
+```txt
+can see Crane Bangkok records
+cannot see Solar Rayong records
+```
+
+---
+
+# Scope L1.12 Documentation / ADR
+
+Create ADR:
+
+```txt
+docs/adr/0014-crm-multi-role-user-assignment.md
+```
+
+Document:
+
+```txt
+1 user = many CRM roles
+membership is organization access
+crm_user_role_assignments is CRM authorization
+permission union rule
+scope union rule
+primary role display-only rule
+businessRole deprecation
+```
+
+Update:
+
+```txt
+docs/implementation/technical-debt.md
+```
+
+---
+
+# Explicit Non-Scope
+
+Do NOT implement:
+
+```txt
+Keycloak group sync
+External identity role sync
+Team hierarchy module
+Advanced ABAC rules
+Approval delegation
+Temporary role expiration
+Role request workflow
+```
+
+---
+
+# Output
+
+After completion, summarize:
+
+1. Files Added
+2. Files Modified
+3. Schema Added
+4. Migration / Backfill
+5. Resolver Changes
+6. UI Added
+7. API Added
+8. Permissions Added
+9. Audit Added
+10. Verification Result
+11. Remaining Risks
+
+---
+
+# Definition of Done
+
+Task L.1 is complete when:
+
+* user can have multiple CRM role assignments
+* each assignment can have branch/product scope
+* one primary role can be selected
+* effective permissions are unioned from all active roles
+* effective branch/product scope is resolved correctly
+* membership.businessRole is no longer primary CRM authorization source
+* role assignment UI works
+* role assignment API works
+* all CRM critical routes use multi-role resolver
+* audit logs are created for assignment changes
+* ADR 0014 exists
--- a/src/app/api/crm/settings/user-role-assignments/[id]/route.ts
+++ b/src/app/api/crm/settings/user-role-assignments/[id]/route.ts
@@ -0,0 +1,91 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import {
+  deleteCrmUserRoleAssignment,
+  updateCrmUserRoleAssignment
+} from '@/features/foundation/crm-role-assignments/server/service';
+import { PERMISSIONS, ROLE_ASSIGNMENT_SCOPE_MODES } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+const updateAssignmentSchema = z.object({
+  branchScopeMode: z.enum(ROLE_ASSIGNMENT_SCOPE_MODES),
+  branchScopeIds: z.array(z.string()).default([]),
+  productTypeScopeMode: z.enum(ROLE_ASSIGNMENT_SCOPE_MODES),
+  productTypeScopeIds: z.array(z.string()).default([]),
+  isPrimary: z.boolean(),
+  isActive: z.boolean()
+});
+
+type RouteProps = {
+  params: Promise<{ id: string }>;
+};
+
+export async function PATCH(request: NextRequest, props: RouteProps) {
+  try {
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmRoleAssignmentManage
+    });
+    const payload = updateAssignmentSchema.parse(await request.json());
+    const { id } = await props.params;
+    const assignment = await updateCrmUserRoleAssignment(
+      organization.id,
+      session.user.id,
+      id,
+      payload
+    );
+
+    return NextResponse.json({
+      success: true,
+      message: 'CRM user role assignment updated successfully',
+      assignment
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid payload' },
+        { status: 400 }
+      );
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json(
+      { message: 'Unable to update CRM user role assignment' },
+      { status: 500 }
+    );
+  }
+}
+
+export async function DELETE(_request: NextRequest, props: RouteProps) {
+  try {
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmRoleAssignmentManage
+    });
+    const { id } = await props.params;
+    await deleteCrmUserRoleAssignment(organization.id, session.user.id, id);
+
+    return NextResponse.json({
+      success: true,
+      message: 'CRM user role assignment deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json(
+      { message: 'Unable to delete CRM user role assignment' },
+      { status: 500 }
+    );
+  }
+}
--- a/src/app/api/crm/settings/user-role-assignments/route.ts
+++ b/src/app/api/crm/settings/user-role-assignments/route.ts
@@ -0,0 +1,87 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import {
+  createCrmUserRoleAssignment,
+  listResolvedCrmRoleAssignments
+} from '@/features/foundation/crm-role-assignments/server/service';
+import { PERMISSIONS, ROLE_ASSIGNMENT_SCOPE_MODES } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+const assignmentSchema = z.object({
+  userId: z.string().min(1),
+  roleProfileId: z.string().min(1),
+  branchScopeMode: z.enum(ROLE_ASSIGNMENT_SCOPE_MODES),
+  branchScopeIds: z.array(z.string()).default([]),
+  productTypeScopeMode: z.enum(ROLE_ASSIGNMENT_SCOPE_MODES),
+  productTypeScopeIds: z.array(z.string()).default([]),
+  isPrimary: z.boolean(),
+  isActive: z.boolean()
+});
+
+export async function GET() {
+  try {
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmRoleAssignmentRead
+    });
+    const data = await listResolvedCrmRoleAssignments(organization.id, session.user.id);
+
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'CRM user role assignments loaded successfully',
+      ...data
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    return NextResponse.json(
+      { message: 'Unable to load CRM user role assignments' },
+      { status: 500 }
+    );
+  }
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmRoleAssignmentManage
+    });
+    const payload = assignmentSchema.parse(await request.json());
+    const assignment = await createCrmUserRoleAssignment(
+      organization.id,
+      session.user.id,
+      payload
+    );
+
+    return NextResponse.json(
+      {
+        success: true,
+        message: 'CRM user role assignment created successfully',
+        assignment
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid payload' },
+        { status: 400 }
+      );
+    }
+
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+
+    return NextResponse.json(
+      { message: 'Unable to create CRM user role assignment' },
+      { status: 500 }
+    );
+  }
+}
--- a/src/app/dashboard/crm/settings/user-role-assignments/page.tsx
+++ b/src/app/dashboard/crm/settings/user-role-assignments/page.tsx
@@ -0,0 +1,39 @@
+import { auth } from '@/auth';
+import { HydrationBoundary, dehydrate } from '@tanstack/react-query';
+import PageContainer from '@/components/layout/page-container';
+import { UserRoleAssignmentsPage } from '@/features/foundation/crm-role-assignments/components/user-role-assignments-page';
+import { crmUserRoleAssignmentsQueryOptions } from '@/features/foundation/crm-role-assignments/api/queries';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { getQueryClient } from '@/lib/query-client';
+
+export default async function CrmUserRoleAssignmentsRoute() {
+  const session = await auth();
+  const canRead =
+    session?.user?.systemRole === 'super_admin' ||
+    (!!session?.user?.activeOrganizationId &&
+      session.user.activePermissions.includes(PERMISSIONS.crmRoleAssignmentRead));
+  const queryClient = getQueryClient();
+
+  if (canRead) {
+    void queryClient.prefetchQuery(crmUserRoleAssignmentsQueryOptions());
+  }
+
+  return (
+    <PageContainer
+      pageTitle='User Role Assignments'
+      pageDescription='Assign multiple CRM role profiles to users with branch and product-type scope per assignment.'
+      access={canRead}
+      accessFallback={
+        <div className='text-muted-foreground rounded-lg border border-dashed p-8 text-center'>
+          You do not have access to CRM user role assignments.
+        </div>
+      }
+    >
+      {canRead ? (
+        <HydrationBoundary state={dehydrate(queryClient)}>
+          <UserRoleAssignmentsPage />
+        </HydrationBoundary>
+      ) : null}
+    </PageContainer>
+  );
+}
--- a/src/auth.ts
+++ b/src/auth.ts
@@ -27,6 +27,7 @@ type SessionOrganization = {
  slug: string;
  role: string;
  businessRole: string;
+  businessRoles: string[];
  branchScopeIds: string[];
  productTypeScopeIds: string[];
  ownershipScope: string;
@@ -119,6 +120,7 @@ async function buildUserAccessContext(userId: string) {
      slug: row.slug,
      role: row.role,
      businessRole: row.businessRole,
+      businessRoles: resolvedAccess.businessRoles,
      branchScopeIds: resolvedAccess.branchScopeIds,
      productTypeScopeIds: resolvedAccess.productTypeScopeIds,
      ownershipScope: resolvedAccess.ownershipScope,
@@ -228,7 +230,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
      token.activeOrganizationName = activeMembership?.name ?? null;
      token.activeOrganizationPlan = activeMembership?.plan ?? null;
      token.activeMembershipRole = activeMembership?.role ?? null;
-      token.activeBusinessRole = activeMembership?.businessRole ?? null;
+      token.activeBusinessRole = activeMembershipAccess?.businessRole ?? activeMembership?.businessRole ?? null;
      token.activePermissions = activeMembershipAccess?.permissions ?? [];
      token.activeBranchScopeIds = activeMembershipAccess?.branchScopeIds ?? [];
      token.activeProductTypeScopeIds = activeMembershipAccess?.productTypeScopeIds ?? [];
@@ -278,6 +280,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
              typeof value.slug === 'string' &&
              typeof value.role === 'string' &&
              typeof value.businessRole === 'string' &&
+              Array.isArray((value as { businessRoles?: unknown }).businessRoles) &&
              Array.isArray(value.branchScopeIds) &&
              Array.isArray(value.productTypeScopeIds) &&
              typeof value.ownershipScope === 'string' &&
--- a/src/config/nav-config.ts
+++ b/src/config/nav-config.ts
@@ -136,13 +136,21 @@ export const navGroups: NavGroup[] = [
        url: "/dashboard/crm/settings/master-options",
        icon: "settings",
        isActive: false,
-        access: { requireOrg: true, permission: "crm.role.read" },
+        access: { requireOrg: true, permission: "crm.role.assignment.read" },
        items: [
          {
            title: "Roles & Permissions",
            url: "/dashboard/crm/settings/roles",
            access: { requireOrg: true, permission: "crm.role.read" },
          },
+          {
+            title: "User Role Assignments",
+            url: "/dashboard/crm/settings/user-role-assignments",
+            access: {
+              requireOrg: true,
+              permission: "crm.role.assignment.read",
+            },
+          },
          {
            title: "Master Options",
            url: "/dashboard/crm/settings/master-options",
--- a/src/db/schema.ts
+++ b/src/db/schema.ts
@@ -86,6 +86,34 @@ export const crmRoleProfiles = pgTable(
  })
 );

+export const crmUserRoleAssignments = pgTable(
+  'crm_user_role_assignments',
+  {
+    id: text('id').primaryKey(),
+    organizationId: text('organization_id').notNull(),
+    userId: text('user_id').notNull(),
+    roleProfileId: text('role_profile_id').notNull(),
+    branchScopeMode: text('branch_scope_mode').default('inherit').notNull(),
+    branchScopeIds: text('branch_scope_ids').array().default([]).notNull(),
+    productTypeScopeMode: text('product_type_scope_mode').default('inherit').notNull(),
+    productTypeScopeIds: text('product_type_scope_ids').array().default([]).notNull(),
+    isPrimary: boolean('is_primary').default(false).notNull(),
+    isActive: boolean('is_active').default(true).notNull(),
+    assignedBy: text('assigned_by').notNull(),
+    assignedAt: timestamp('assigned_at', { withTimezone: true }).defaultNow().notNull(),
+    createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull(),
+    deletedAt: timestamp('deleted_at', { withTimezone: true })
+  },
+  (table) => ({
+    organizationUserRoleProfileIdx: uniqueIndex('crm_user_role_assignments_org_user_role_idx').on(
+      table.organizationId,
+      table.userId,
+      table.roleProfileId
+    )
+  })
+);
+
 export const products = pgTable('products', {
  id: integer('id').primaryKey().generatedAlwaysAsIdentity(),
  organizationId: text('organization_id').notNull(),
--- a/src/features/foundation/crm-role-assignments/api/mutations.ts
+++ b/src/features/foundation/crm-role-assignments/api/mutations.ts
@@ -0,0 +1,41 @@
+import { mutationOptions } from '@tanstack/react-query';
+import { getQueryClient } from '@/lib/query-client';
+import {
+  createCrmUserRoleAssignment,
+  deleteCrmUserRoleAssignment,
+  updateCrmUserRoleAssignment
+} from './service';
+import { crmUserRoleAssignmentQueryKeys } from './queries';
+
+export const createCrmUserRoleAssignmentMutation = mutationOptions({
+  mutationFn: createCrmUserRoleAssignment,
+  onSettled: async () => {
+    await getQueryClient().invalidateQueries({
+      queryKey: crmUserRoleAssignmentQueryKeys.all
+    });
+  }
+});
+
+export const updateCrmUserRoleAssignmentMutation = mutationOptions({
+  mutationFn: ({
+    id,
+    payload
+  }: {
+    id: string;
+    payload: Parameters<typeof updateCrmUserRoleAssignment>[1];
+  }) => updateCrmUserRoleAssignment(id, payload),
+  onSettled: async () => {
+    await getQueryClient().invalidateQueries({
+      queryKey: crmUserRoleAssignmentQueryKeys.all
+    });
+  }
+});
+
+export const deleteCrmUserRoleAssignmentMutation = mutationOptions({
+  mutationFn: deleteCrmUserRoleAssignment,
+  onSettled: async () => {
+    await getQueryClient().invalidateQueries({
+      queryKey: crmUserRoleAssignmentQueryKeys.all
+    });
+  }
+});
--- a/src/features/foundation/crm-role-assignments/api/queries.ts
+++ b/src/features/foundation/crm-role-assignments/api/queries.ts
@@ -0,0 +1,13 @@
+import { queryOptions } from '@tanstack/react-query';
+import { getCrmUserRoleAssignments } from './service';
+
+export const crmUserRoleAssignmentQueryKeys = {
+  all: ['crm-user-role-assignments'] as const
+};
+
+export function crmUserRoleAssignmentsQueryOptions() {
+  return queryOptions({
+    queryKey: crmUserRoleAssignmentQueryKeys.all,
+    queryFn: getCrmUserRoleAssignments
+  });
+}
--- a/src/features/foundation/crm-role-assignments/api/service.ts
+++ b/src/features/foundation/crm-role-assignments/api/service.ts
@@ -0,0 +1,42 @@
+import { apiClient } from '@/lib/api-client';
+import type {
+  CrmUserRoleAssignmentMutationPayload,
+  CrmUserRoleAssignmentsResponse,
+  CrmUserRoleAssignmentRecord,
+  UpdateCrmUserRoleAssignmentPayload
+} from './types';
+
+export async function getCrmUserRoleAssignments() {
+  return apiClient<CrmUserRoleAssignmentsResponse>('/crm/settings/user-role-assignments');
+}
+
+export async function createCrmUserRoleAssignment(
+  payload: CrmUserRoleAssignmentMutationPayload
+) {
+  return apiClient<{ success: boolean; assignment: CrmUserRoleAssignmentRecord }>(
+    '/crm/settings/user-role-assignments',
+    {
+      method: 'POST',
+      body: JSON.stringify(payload)
+    }
+  );
+}
+
+export async function updateCrmUserRoleAssignment(
+  id: string,
+  payload: UpdateCrmUserRoleAssignmentPayload
+) {
+  return apiClient<{ success: boolean; assignment: CrmUserRoleAssignmentRecord }>(
+    `/crm/settings/user-role-assignments/${id}`,
+    {
+      method: 'PATCH',
+      body: JSON.stringify(payload)
+    }
+  );
+}
+
+export async function deleteCrmUserRoleAssignment(id: string) {
+  return apiClient<{ success: boolean }>(`/crm/settings/user-role-assignments/${id}`, {
+    method: 'DELETE'
+  });
+}
--- a/src/features/foundation/crm-role-assignments/api/types.ts
+++ b/src/features/foundation/crm-role-assignments/api/types.ts
@@ -0,0 +1,63 @@
+import type { CrmRoleAssignmentScopeMode } from '@/lib/auth/rbac';
+
+export interface CrmUserRoleAssignmentRecord {
+  id: string;
+  organizationId: string;
+  userId: string;
+  userName: string;
+  userEmail: string;
+  roleProfileId: string;
+  roleProfileCode: string;
+  roleProfileName: string;
+  branchScopeMode: CrmRoleAssignmentScopeMode;
+  branchScopeIds: string[];
+  productTypeScopeMode: CrmRoleAssignmentScopeMode;
+  productTypeScopeIds: string[];
+  isPrimary: boolean;
+  isActive: boolean;
+  assignedBy: string;
+  assignedAt: string;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+}
+
+export interface CrmRoleAssignmentReferenceOption {
+  id: string;
+  code?: string;
+  name?: string;
+  label?: string;
+  email?: string;
+}
+
+export interface CrmUserRoleAssignmentsResponse {
+  success: boolean;
+  time: string;
+  message: string;
+  assignments: CrmUserRoleAssignmentRecord[];
+  scopeModes: CrmRoleAssignmentScopeMode[];
+  roleProfiles: Array<{ id: string; code: string; name: string }>;
+  users: Array<{ id: string; name: string; email: string }>;
+  branches: Array<{ id: string; code: string; label: string }>;
+  productTypes: Array<{ id: string; code: string; label: string }>;
+}
+
+export interface CrmUserRoleAssignmentMutationPayload {
+  userId: string;
+  roleProfileId: string;
+  branchScopeMode: CrmRoleAssignmentScopeMode;
+  branchScopeIds: string[];
+  productTypeScopeMode: CrmRoleAssignmentScopeMode;
+  productTypeScopeIds: string[];
+  isPrimary: boolean;
+  isActive: boolean;
+}
+
+export interface UpdateCrmUserRoleAssignmentPayload {
+  branchScopeMode: CrmRoleAssignmentScopeMode;
+  branchScopeIds: string[];
+  productTypeScopeMode: CrmRoleAssignmentScopeMode;
+  productTypeScopeIds: string[];
+  isPrimary: boolean;
+  isActive: boolean;
+}
--- a/src/features/foundation/crm-role-assignments/components/user-role-assignments-page.tsx
+++ b/src/features/foundation/crm-role-assignments/components/user-role-assignments-page.tsx
@@ -0,0 +1,438 @@
+'use client';
+
+import { useEffect, useMemo, useState } from 'react';
+import { useMutation, useSuspenseQuery } from '@tanstack/react-query';
+import { toast } from 'sonner';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Checkbox } from '@/components/ui/checkbox';
+import { Label } from '@/components/ui/label';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue
+} from '@/components/ui/select';
+import {
+  createCrmUserRoleAssignmentMutation,
+  deleteCrmUserRoleAssignmentMutation,
+  updateCrmUserRoleAssignmentMutation
+} from '../api/mutations';
+import { crmUserRoleAssignmentsQueryOptions } from '../api/queries';
+import type {
+  CrmUserRoleAssignmentMutationPayload,
+  CrmUserRoleAssignmentRecord,
+  UpdateCrmUserRoleAssignmentPayload
+} from '../api/types';
+
+type AssignmentEditorState = {
+  branchScopeMode: CrmUserRoleAssignmentMutationPayload['branchScopeMode'];
+  branchScopeIds: string[];
+  productTypeScopeMode: CrmUserRoleAssignmentMutationPayload['productTypeScopeMode'];
+  productTypeScopeIds: string[];
+  isPrimary: boolean;
+  isActive: boolean;
+};
+
+const emptyCreateState: CrmUserRoleAssignmentMutationPayload = {
+  userId: '',
+  roleProfileId: '',
+  branchScopeMode: 'inherit',
+  branchScopeIds: [],
+  productTypeScopeMode: 'inherit',
+  productTypeScopeIds: [],
+  isPrimary: false,
+  isActive: true
+};
+
+function ScopeSelector(props: {
+  label: string;
+  mode: CrmUserRoleAssignmentMutationPayload['branchScopeMode'];
+  ids: string[];
+  options: Array<{ id: string; label: string; code: string }>;
+  onModeChange: (value: CrmUserRoleAssignmentMutationPayload['branchScopeMode']) => void;
+  onIdsChange: (value: string[]) => void;
+}) {
+  return (
+    <div className='space-y-3'>
+      <div className='space-y-2'>
+        <Label>{props.label}</Label>
+        <Select value={props.mode} onValueChange={props.onModeChange}>
+          <SelectTrigger>
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value='inherit'>Inherit role profile</SelectItem>
+            <SelectItem value='all'>All</SelectItem>
+            <SelectItem value='selected'>Selected</SelectItem>
+            <SelectItem value='none'>None</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
+
+      {props.mode === 'selected' ? (
+        <div className='grid gap-2 rounded-md border p-3 md:grid-cols-2'>
+          {props.options.map((option) => {
+            const checked = props.ids.includes(option.id);
+
+            return (
+              <label key={option.id} className='flex items-start gap-3 rounded-md border p-3'>
+                <Checkbox
+                  checked={checked}
+                  onCheckedChange={(value) => {
+                    props.onIdsChange(
+                      value === true
+                        ? [...new Set([...props.ids, option.id])]
+                        : props.ids.filter((item) => item !== option.id)
+                    );
+                  }}
+                />
+                <div>
+                  <div className='font-medium'>{option.label}</div>
+                  <div className='text-muted-foreground text-xs'>{option.code}</div>
+                </div>
+              </label>
+            );
+          })}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+export function UserRoleAssignmentsPage() {
+  const { data } = useSuspenseQuery(crmUserRoleAssignmentsQueryOptions());
+  const [selectedId, setSelectedId] = useState<string | null>(data.assignments[0]?.id ?? null);
+  const [createState, setCreateState] =
+    useState<CrmUserRoleAssignmentMutationPayload>(emptyCreateState);
+  const [editorState, setEditorState] = useState<AssignmentEditorState | null>(null);
+  const selectedAssignment = useMemo(
+    () => data.assignments.find((assignment) => assignment.id === selectedId) ?? null,
+    [data.assignments, selectedId]
+  );
+
+  useEffect(() => {
+    if (!selectedAssignment) {
+      setEditorState(null);
+      return;
+    }
+
+    setEditorState({
+      branchScopeMode: selectedAssignment.branchScopeMode,
+      branchScopeIds: selectedAssignment.branchScopeIds,
+      productTypeScopeMode: selectedAssignment.productTypeScopeMode,
+      productTypeScopeIds: selectedAssignment.productTypeScopeIds,
+      isPrimary: selectedAssignment.isPrimary,
+      isActive: selectedAssignment.isActive
+    });
+  }, [selectedAssignment]);
+
+  const createMutation = useMutation({
+    ...createCrmUserRoleAssignmentMutation,
+    onSuccess: () => {
+      toast.success('CRM role assignment created successfully');
+      setCreateState(emptyCreateState);
+    },
+    onError: (error) =>
+      toast.error(
+        error instanceof Error ? error.message : 'Unable to create CRM role assignment'
+      )
+  });
+
+  const updateMutation = useMutation({
+    ...updateCrmUserRoleAssignmentMutation,
+    onSuccess: () => toast.success('CRM role assignment updated successfully'),
+    onError: (error) =>
+      toast.error(
+        error instanceof Error ? error.message : 'Unable to update CRM role assignment'
+      )
+  });
+
+  const deleteMutation = useMutation({
+    ...deleteCrmUserRoleAssignmentMutation,
+    onSuccess: () => {
+      toast.success('CRM role assignment deleted successfully');
+      setSelectedId(null);
+    },
+    onError: (error) =>
+      toast.error(
+        error instanceof Error ? error.message : 'Unable to delete CRM role assignment'
+      )
+  });
+
+  async function handleCreate() {
+    if (!createState.userId || !createState.roleProfileId) {
+      toast.error('User and role profile are required');
+      return;
+    }
+
+    await createMutation.mutateAsync(createState);
+  }
+
+  async function handleUpdate() {
+    if (!selectedAssignment || !editorState) {
+      return;
+    }
+
+    await updateMutation.mutateAsync({
+      id: selectedAssignment.id,
+      payload: editorState satisfies UpdateCrmUserRoleAssignmentPayload
+    });
+  }
+
+  return (
+    <div className='space-y-6'>
+      <Card>
+        <CardHeader>
+          <CardTitle>Assign CRM Role</CardTitle>
+          <CardDescription>
+            One user can hold multiple CRM roles in the same organization. Primary role is for
+            display; effective access unions across active assignments.
+          </CardDescription>
+        </CardHeader>
+        <CardContent className='space-y-6'>
+          <div className='grid gap-4 md:grid-cols-2'>
+            <div className='space-y-2'>
+              <Label>User</Label>
+              <Select
+                value={createState.userId}
+                onValueChange={(value) => setCreateState({ ...createState, userId: value })}
+              >
+                <SelectTrigger>
+                  <SelectValue placeholder='Select user' />
+                </SelectTrigger>
+                <SelectContent>
+                  {data.users.map((user) => (
+                    <SelectItem key={user.id} value={user.id}>
+                      {user.name} ({user.email})
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+            <div className='space-y-2'>
+              <Label>Role Profile</Label>
+              <Select
+                value={createState.roleProfileId}
+                onValueChange={(value) =>
+                  setCreateState({ ...createState, roleProfileId: value })
+                }
+              >
+                <SelectTrigger>
+                  <SelectValue placeholder='Select role profile' />
+                </SelectTrigger>
+                <SelectContent>
+                  {data.roleProfiles.map((role) => (
+                    <SelectItem key={role.id} value={role.id}>
+                      {role.name} ({role.code})
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+          </div>
+
+          <div className='grid gap-6 xl:grid-cols-2'>
+            <ScopeSelector
+              label='Branch Scope'
+              mode={createState.branchScopeMode}
+              ids={createState.branchScopeIds}
+              options={data.branches}
+              onModeChange={(value) =>
+                setCreateState({
+                  ...createState,
+                  branchScopeMode: value,
+                  branchScopeIds: value === 'selected' ? createState.branchScopeIds : []
+                })
+              }
+              onIdsChange={(value) => setCreateState({ ...createState, branchScopeIds: value })}
+            />
+            <ScopeSelector
+              label='Product Type Scope'
+              mode={createState.productTypeScopeMode}
+              ids={createState.productTypeScopeIds}
+              options={data.productTypes}
+              onModeChange={(value) =>
+                setCreateState({
+                  ...createState,
+                  productTypeScopeMode: value,
+                  productTypeScopeIds: value === 'selected' ? createState.productTypeScopeIds : []
+                })
+              }
+              onIdsChange={(value) =>
+                setCreateState({ ...createState, productTypeScopeIds: value })
+              }
+            />
+          </div>
+
+          <div className='flex flex-wrap items-center gap-6'>
+            <label className='flex items-center gap-3'>
+              <Checkbox
+                checked={createState.isPrimary}
+                onCheckedChange={(value) =>
+                  setCreateState({ ...createState, isPrimary: value === true })
+                }
+              />
+              <span className='text-sm font-medium'>Primary role</span>
+            </label>
+            <label className='flex items-center gap-3'>
+              <Checkbox
+                checked={createState.isActive}
+                onCheckedChange={(value) =>
+                  setCreateState({ ...createState, isActive: value === true })
+                }
+              />
+              <span className='text-sm font-medium'>Active</span>
+            </label>
+          </div>
+
+          <Button onClick={() => void handleCreate()} isLoading={createMutation.isPending}>
+            Assign Role
+          </Button>
+        </CardContent>
+      </Card>
+
+      <div className='grid gap-6 xl:grid-cols-[360px_minmax(0,1fr)]'>
+        <Card>
+          <CardHeader>
+            <CardTitle>Existing Assignments</CardTitle>
+            <CardDescription>
+              Active and historical CRM role assignments in this organization.
+            </CardDescription>
+          </CardHeader>
+          <CardContent className='space-y-3'>
+            {data.assignments.map((assignment) => (
+              <button
+                key={assignment.id}
+                type='button'
+                onClick={() => setSelectedId(assignment.id)}
+                className={`w-full rounded-lg border p-3 text-left transition ${
+                  assignment.id === selectedId
+                    ? 'border-primary bg-primary/5'
+                    : 'hover:bg-muted/40'
+                }`}
+              >
+                <div className='flex items-center justify-between gap-2'>
+                  <div className='font-medium'>{assignment.userName}</div>
+                  <div className='flex gap-2'>
+                    {assignment.isPrimary ? <Badge>Primary</Badge> : null}
+                    {!assignment.isActive ? <Badge variant='outline'>Inactive</Badge> : null}
+                  </div>
+                </div>
+                <div className='text-muted-foreground mt-1 text-xs'>{assignment.userEmail}</div>
+                <div className='mt-2 text-sm'>
+                  {assignment.roleProfileName} ({assignment.roleProfileCode})
+                </div>
+              </button>
+            ))}
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader>
+            <CardTitle>Assignment Detail</CardTitle>
+            <CardDescription>
+              Update scope, activation, and primary-role display for the selected CRM assignment.
+            </CardDescription>
+          </CardHeader>
+          <CardContent className='space-y-6'>
+            {!selectedAssignment || !editorState ? (
+              <div className='text-muted-foreground rounded-lg border border-dashed p-8 text-center'>
+                Select an assignment to edit.
+              </div>
+            ) : (
+              <>
+                <div className='grid gap-4 md:grid-cols-2'>
+                  <div className='rounded-lg border p-4'>
+                    <div className='text-muted-foreground text-xs'>User</div>
+                    <div className='font-medium'>{selectedAssignment.userName}</div>
+                    <div className='text-muted-foreground text-sm'>{selectedAssignment.userEmail}</div>
+                  </div>
+                  <div className='rounded-lg border p-4'>
+                    <div className='text-muted-foreground text-xs'>Role Profile</div>
+                    <div className='font-medium'>{selectedAssignment.roleProfileName}</div>
+                    <div className='text-muted-foreground text-sm'>
+                      {selectedAssignment.roleProfileCode}
+                    </div>
+                  </div>
+                </div>
+
+                <div className='grid gap-6 xl:grid-cols-2'>
+                  <ScopeSelector
+                    label='Branch Scope'
+                    mode={editorState.branchScopeMode}
+                    ids={editorState.branchScopeIds}
+                    options={data.branches}
+                    onModeChange={(value) =>
+                      setEditorState({
+                        ...editorState,
+                        branchScopeMode: value,
+                        branchScopeIds: value === 'selected' ? editorState.branchScopeIds : []
+                      })
+                    }
+                    onIdsChange={(value) =>
+                      setEditorState({ ...editorState, branchScopeIds: value })
+                    }
+                  />
+                  <ScopeSelector
+                    label='Product Type Scope'
+                    mode={editorState.productTypeScopeMode}
+                    ids={editorState.productTypeScopeIds}
+                    options={data.productTypes}
+                    onModeChange={(value) =>
+                      setEditorState({
+                        ...editorState,
+                        productTypeScopeMode: value,
+                        productTypeScopeIds:
+                          value === 'selected' ? editorState.productTypeScopeIds : []
+                      })
+                    }
+                    onIdsChange={(value) =>
+                      setEditorState({ ...editorState, productTypeScopeIds: value })
+                    }
+                  />
+                </div>
+
+                <div className='flex flex-wrap items-center gap-6'>
+                  <label className='flex items-center gap-3'>
+                    <Checkbox
+                      checked={editorState.isPrimary}
+                      onCheckedChange={(value) =>
+                        setEditorState({ ...editorState, isPrimary: value === true })
+                      }
+                    />
+                    <span className='text-sm font-medium'>Primary role</span>
+                  </label>
+                  <label className='flex items-center gap-3'>
+                    <Checkbox
+                      checked={editorState.isActive}
+                      onCheckedChange={(value) =>
+                        setEditorState({ ...editorState, isActive: value === true })
+                      }
+                    />
+                    <span className='text-sm font-medium'>Active</span>
+                  </label>
+                </div>
+
+                <div className='flex flex-wrap gap-3'>
+                  <Button onClick={() => void handleUpdate()} isLoading={updateMutation.isPending}>
+                    Save Assignment
+                  </Button>
+                  <Button
+                    variant='destructive'
+                    onClick={() => void deleteMutation.mutateAsync(selectedAssignment.id)}
+                    isLoading={deleteMutation.isPending}
+                  >
+                    Remove Assignment
+                  </Button>
+                </div>
+              </>
+            )}
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  );
+}
--- a/src/features/foundation/crm-role-assignments/server/service.ts
+++ b/src/features/foundation/crm-role-assignments/server/service.ts
@@ -0,0 +1,625 @@
+import { and, asc, eq, inArray, isNull } from 'drizzle-orm';
+import {
+  crmRoleProfiles,
+  crmUserRoleAssignments,
+  memberships,
+  msOptions,
+  users
+} from '@/db/schema';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { getUserBranches } from '@/features/foundation/branch-scope/service';
+import { getActiveOptionsByCategory } from '@/features/foundation/master-options/service';
+import { ensureCrmRoleProfiles } from '@/features/foundation/role-management/server/service';
+import {
+  ROLE_ASSIGNMENT_SCOPE_MODES,
+  isRoleAssignmentScopeMode,
+  type CrmRoleAssignmentScopeMode
+} from '@/lib/auth/rbac';
+import { db } from '@/lib/db';
+import { AuthError } from '@/lib/auth/session';
+
+function normalizeStringArray(value: unknown) {
+  return Array.isArray(value)
+    ? [
+        ...new Set(
+          value.filter(
+            (item): item is string => typeof item === 'string' && item.trim().length > 0
+          )
+        )
+      ]
+    : [];
+}
+
+function isSelectedScopeInvalid(mode: CrmRoleAssignmentScopeMode, values: string[]) {
+  return mode === 'selected' && values.length === 0;
+}
+
+function mapAssignmentRow(
+  row: typeof crmUserRoleAssignments.$inferSelect,
+  options: {
+    roleProfileCode: string;
+    roleProfileName: string;
+    userName: string;
+    userEmail: string;
+  }
+) {
+  return {
+    id: row.id,
+    organizationId: row.organizationId,
+    userId: row.userId,
+    userName: options.userName,
+    userEmail: options.userEmail,
+    roleProfileId: row.roleProfileId,
+    roleProfileCode: options.roleProfileCode,
+    roleProfileName: options.roleProfileName,
+    branchScopeMode: isRoleAssignmentScopeMode(row.branchScopeMode)
+      ? row.branchScopeMode
+      : 'inherit',
+    branchScopeIds: normalizeStringArray(row.branchScopeIds),
+    productTypeScopeMode: isRoleAssignmentScopeMode(row.productTypeScopeMode)
+      ? row.productTypeScopeMode
+      : 'inherit',
+    productTypeScopeIds: normalizeStringArray(row.productTypeScopeIds),
+    isPrimary: row.isPrimary,
+    isActive: row.isActive,
+    assignedBy: row.assignedBy,
+    assignedAt: row.assignedAt.toISOString(),
+    createdAt: row.createdAt.toISOString(),
+    updatedAt: row.updatedAt.toISOString(),
+    deletedAt: row.deletedAt?.toISOString() ?? null
+  };
+}
+
+async function ensurePrimaryAssignmentForUser(organizationId: string, userId: string) {
+  const activeAssignments = await db
+    .select({
+      id: crmUserRoleAssignments.id,
+      isPrimary: crmUserRoleAssignments.isPrimary
+    })
+    .from(crmUserRoleAssignments)
+    .where(
+      and(
+        eq(crmUserRoleAssignments.organizationId, organizationId),
+        eq(crmUserRoleAssignments.userId, userId),
+        eq(crmUserRoleAssignments.isActive, true),
+        isNull(crmUserRoleAssignments.deletedAt)
+      )
+    )
+    .orderBy(asc(crmUserRoleAssignments.assignedAt));
+
+  if (!activeAssignments.length || activeAssignments.some((item) => item.isPrimary)) {
+    return;
+  }
+
+  await db
+    .update(crmUserRoleAssignments)
+    .set({
+      isPrimary: true,
+      updatedAt: new Date()
+    })
+    .where(eq(crmUserRoleAssignments.id, activeAssignments[0]!.id));
+}
+
+async function setPrimaryAssignment(
+  organizationId: string,
+  userId: string,
+  assignmentId: string,
+  isPrimary: boolean
+) {
+  if (!isPrimary) {
+    return;
+  }
+
+  await db
+    .update(crmUserRoleAssignments)
+    .set({
+      isPrimary: false,
+      updatedAt: new Date()
+    })
+    .where(
+      and(
+        eq(crmUserRoleAssignments.organizationId, organizationId),
+        eq(crmUserRoleAssignments.userId, userId),
+        isNull(crmUserRoleAssignments.deletedAt)
+      )
+    );
+
+  await db
+    .update(crmUserRoleAssignments)
+    .set({
+      isPrimary: true,
+      updatedAt: new Date()
+    })
+    .where(eq(crmUserRoleAssignments.id, assignmentId));
+}
+
+export async function ensureCrmRoleAssignmentsBackfillForMembership(
+  organizationId: string,
+  membership: typeof memberships.$inferSelect,
+  actorUserId: string
+) {
+  await ensureCrmRoleProfiles(organizationId, actorUserId);
+
+  const [roleProfile] = await db
+    .select({
+      id: crmRoleProfiles.id
+    })
+    .from(crmRoleProfiles)
+    .where(
+      and(
+        eq(crmRoleProfiles.organizationId, organizationId),
+        eq(crmRoleProfiles.code, membership.businessRole),
+        isNull(crmRoleProfiles.deletedAt)
+      )
+    )
+    .limit(1);
+
+  if (!roleProfile) {
+    return;
+  }
+
+  const existing = await db.query.crmUserRoleAssignments.findFirst({
+    where: and(
+      eq(crmUserRoleAssignments.organizationId, organizationId),
+      eq(crmUserRoleAssignments.userId, membership.userId),
+      eq(crmUserRoleAssignments.roleProfileId, roleProfile.id)
+    )
+  });
+
+  const branchScopeIds = normalizeStringArray(membership.branchScopeIds);
+  const productTypeScopeIds = normalizeStringArray(membership.productTypeScopeIds);
+  const branchScopeMode: CrmRoleAssignmentScopeMode = branchScopeIds.length ? 'selected' : 'all';
+  const productTypeScopeMode: CrmRoleAssignmentScopeMode = productTypeScopeIds.length
+    ? 'selected'
+    : 'all';
+
+  if (existing) {
+    if (existing.deletedAt || !existing.isActive) {
+      await db
+        .update(crmUserRoleAssignments)
+        .set({
+          branchScopeMode,
+          branchScopeIds,
+          productTypeScopeMode,
+          productTypeScopeIds,
+          isPrimary: true,
+          isActive: true,
+          assignedBy: actorUserId,
+          assignedAt: new Date(),
+          updatedAt: new Date(),
+          deletedAt: null
+        })
+        .where(eq(crmUserRoleAssignments.id, existing.id));
+    }
+
+    await setPrimaryAssignment(organizationId, membership.userId, existing.id, true);
+    return;
+  }
+
+  const [created] = await db
+    .insert(crmUserRoleAssignments)
+    .values({
+      id: crypto.randomUUID(),
+      organizationId,
+      userId: membership.userId,
+      roleProfileId: roleProfile.id,
+      branchScopeMode,
+      branchScopeIds,
+      productTypeScopeMode,
+      productTypeScopeIds,
+      isPrimary: true,
+      isActive: true,
+      assignedBy: actorUserId
+    })
+    .returning();
+
+  await setPrimaryAssignment(organizationId, membership.userId, created.id, true);
+}
+
+export async function ensureCrmRoleAssignmentsBackfillForOrganization(
+  organizationId: string,
+  actorUserId: string
+) {
+  const membershipRows = await db.query.memberships.findMany({
+    where: eq(memberships.organizationId, organizationId)
+  });
+
+  for (const membership of membershipRows) {
+    await ensureCrmRoleAssignmentsBackfillForMembership(organizationId, membership, actorUserId);
+  }
+}
+
+export async function listResolvedCrmRoleAssignments(
+  organizationId: string,
+  actorUserId: string
+) {
+  await ensureCrmRoleAssignmentsBackfillForOrganization(organizationId, actorUserId);
+
+  const rows = await db
+    .select({
+      assignment: crmUserRoleAssignments,
+      roleProfileCode: crmRoleProfiles.code,
+      roleProfileName: crmRoleProfiles.name,
+      userName: users.name,
+      userEmail: users.email
+    })
+    .from(crmUserRoleAssignments)
+    .innerJoin(crmRoleProfiles, eq(crmRoleProfiles.id, crmUserRoleAssignments.roleProfileId))
+    .innerJoin(users, eq(users.id, crmUserRoleAssignments.userId))
+    .where(
+      and(
+        eq(crmUserRoleAssignments.organizationId, organizationId),
+        isNull(crmUserRoleAssignments.deletedAt)
+      )
+    )
+    .orderBy(asc(users.name), asc(crmUserRoleAssignments.assignedAt));
+
+  const [branchOptions, productTypeOptions, roleProfiles, orgUsers] = await Promise.all([
+    getUserBranches(),
+    getActiveOptionsByCategory('crm_product_type', { organizationId }),
+    db
+      .select({
+        id: crmRoleProfiles.id,
+        code: crmRoleProfiles.code,
+        name: crmRoleProfiles.name
+      })
+      .from(crmRoleProfiles)
+      .where(
+        and(
+          eq(crmRoleProfiles.organizationId, organizationId),
+          eq(crmRoleProfiles.isActive, true),
+          isNull(crmRoleProfiles.deletedAt)
+        )
+      )
+      .orderBy(asc(crmRoleProfiles.name)),
+    db
+      .select({
+        userId: users.id,
+        name: users.name,
+        email: users.email
+      })
+      .from(memberships)
+      .innerJoin(users, eq(users.id, memberships.userId))
+      .where(eq(memberships.organizationId, organizationId))
+      .orderBy(asc(users.name))
+  ]);
+
+  return {
+    assignments: rows.map((row) =>
+      mapAssignmentRow(row.assignment, {
+        roleProfileCode: row.roleProfileCode,
+        roleProfileName: row.roleProfileName,
+        userName: row.userName,
+        userEmail: row.userEmail
+      })
+    ),
+    scopeModes: [...ROLE_ASSIGNMENT_SCOPE_MODES],
+    roleProfiles,
+    users: [...new Map(orgUsers.map((row) => [row.userId, row])).values()].map((row) => ({
+      id: row.userId,
+      name: row.name,
+      email: row.email
+    })),
+    branches: branchOptions.map((branch) => ({
+      id: branch.id,
+      code: branch.code,
+      label: branch.name
+    })),
+    productTypes: productTypeOptions.map((option) => ({
+      id: option.id,
+      code: option.code,
+      label: option.label
+    }))
+  };
+}
+
+export interface UpsertCrmUserRoleAssignmentPayload {
+  userId: string;
+  roleProfileId: string;
+  branchScopeMode: CrmRoleAssignmentScopeMode;
+  branchScopeIds: string[];
+  productTypeScopeMode: CrmRoleAssignmentScopeMode;
+  productTypeScopeIds: string[];
+  isPrimary: boolean;
+  isActive: boolean;
+}
+
+async function validateAssignmentPayload(
+  organizationId: string,
+  payload: UpsertCrmUserRoleAssignmentPayload
+) {
+  const [userMembership, roleProfile] = await Promise.all([
+    db.query.memberships.findFirst({
+      where: and(
+        eq(memberships.organizationId, organizationId),
+        eq(memberships.userId, payload.userId)
+      )
+    }),
+    db.query.crmRoleProfiles.findFirst({
+      where: and(
+        eq(crmRoleProfiles.organizationId, organizationId),
+        eq(crmRoleProfiles.id, payload.roleProfileId),
+        isNull(crmRoleProfiles.deletedAt)
+      )
+    })
+  ]);
+
+  if (!userMembership) {
+    throw new AuthError('User does not belong to this organization', 404);
+  }
+
+  if (!roleProfile) {
+    throw new AuthError('CRM role profile not found', 404);
+  }
+
+  if (isSelectedScopeInvalid(payload.branchScopeMode, payload.branchScopeIds)) {
+    throw new AuthError('Select at least one branch when branch scope mode is selected', 400);
+  }
+
+  if (isSelectedScopeInvalid(payload.productTypeScopeMode, payload.productTypeScopeIds)) {
+    throw new AuthError(
+      'Select at least one product type when product scope mode is selected',
+      400
+    );
+  }
+
+  const branches = await getUserBranches();
+  const validBranchIds = new Set(branches.map((branch) => branch.id));
+  const productTypes = await getActiveOptionsByCategory('crm_product_type', { organizationId });
+  const validProductTypeIds = new Set(productTypes.map((option) => option.id));
+
+  if (payload.branchScopeIds.some((id) => !validBranchIds.has(id))) {
+    throw new AuthError('Invalid branch scope selection', 400);
+  }
+
+  if (payload.productTypeScopeIds.some((id) => !validProductTypeIds.has(id))) {
+    throw new AuthError('Invalid product type scope selection', 400);
+  }
+
+  return {
+    userMembership,
+    roleProfile
+  };
+}
+
+export async function createCrmUserRoleAssignment(
+  organizationId: string,
+  actorUserId: string,
+  payload: UpsertCrmUserRoleAssignmentPayload
+) {
+  await validateAssignmentPayload(organizationId, payload);
+
+  const duplicate = await db.query.crmUserRoleAssignments.findFirst({
+    where: and(
+      eq(crmUserRoleAssignments.organizationId, organizationId),
+      eq(crmUserRoleAssignments.userId, payload.userId),
+      eq(crmUserRoleAssignments.roleProfileId, payload.roleProfileId)
+    )
+  });
+
+  let assignmentId = duplicate?.id ?? null;
+
+  if (duplicate) {
+    await db
+      .update(crmUserRoleAssignments)
+      .set({
+        branchScopeMode: payload.branchScopeMode,
+        branchScopeIds: payload.branchScopeIds,
+        productTypeScopeMode: payload.productTypeScopeMode,
+        productTypeScopeIds: payload.productTypeScopeIds,
+        isPrimary: payload.isPrimary,
+        isActive: payload.isActive,
+        assignedBy: actorUserId,
+        assignedAt: new Date(),
+        updatedAt: new Date(),
+        deletedAt: null
+      })
+      .where(eq(crmUserRoleAssignments.id, duplicate.id));
+  } else {
+    const [created] = await db
+      .insert(crmUserRoleAssignments)
+      .values({
+        id: crypto.randomUUID(),
+        organizationId,
+        userId: payload.userId,
+        roleProfileId: payload.roleProfileId,
+        branchScopeMode: payload.branchScopeMode,
+        branchScopeIds: payload.branchScopeIds,
+        productTypeScopeMode: payload.productTypeScopeMode,
+        productTypeScopeIds: payload.productTypeScopeIds,
+        isPrimary: payload.isPrimary,
+        isActive: payload.isActive,
+        assignedBy: actorUserId
+      })
+      .returning();
+
+    assignmentId = created.id;
+  }
+
+  if (!assignmentId) {
+    throw new AuthError('Unable to create CRM role assignment', 500);
+  }
+
+  await setPrimaryAssignment(organizationId, payload.userId, assignmentId, payload.isPrimary);
+  await ensurePrimaryAssignmentForUser(organizationId, payload.userId);
+
+  const refreshed = await listResolvedCrmRoleAssignments(organizationId, actorUserId);
+  const assignment = refreshed.assignments.find((item) => item.id === assignmentId);
+
+  if (!assignment) {
+    throw new AuthError('CRM role assignment not found after create', 500);
+  }
+
+  await auditAction({
+    organizationId,
+    userId: actorUserId,
+    entityType: 'crm_user_role_assignment',
+    entityId: assignment.id,
+    action: duplicate ? 'reactivate' : 'create',
+    afterData: assignment
+  });
+
+  return assignment;
+}
+
+export async function updateCrmUserRoleAssignment(
+  organizationId: string,
+  actorUserId: string,
+  assignmentId: string,
+  payload: Omit<UpsertCrmUserRoleAssignmentPayload, 'userId' | 'roleProfileId'>
+) {
+  const current = await db.query.crmUserRoleAssignments.findFirst({
+    where: and(
+      eq(crmUserRoleAssignments.id, assignmentId),
+      eq(crmUserRoleAssignments.organizationId, organizationId)
+    )
+  });
+
+  if (!current || current.deletedAt) {
+    throw new AuthError('CRM role assignment not found', 404);
+  }
+
+  await validateAssignmentPayload(organizationId, {
+    userId: current.userId,
+    roleProfileId: current.roleProfileId,
+    ...payload
+  });
+
+  await db
+    .update(crmUserRoleAssignments)
+    .set({
+      branchScopeMode: payload.branchScopeMode,
+      branchScopeIds: payload.branchScopeIds,
+      productTypeScopeMode: payload.productTypeScopeMode,
+      productTypeScopeIds: payload.productTypeScopeIds,
+      isPrimary: payload.isPrimary,
+      isActive: payload.isActive,
+      updatedAt: new Date()
+    })
+    .where(eq(crmUserRoleAssignments.id, assignmentId));
+
+  await setPrimaryAssignment(organizationId, current.userId, assignmentId, payload.isPrimary);
+  await ensurePrimaryAssignmentForUser(organizationId, current.userId);
+
+  const refreshed = await listResolvedCrmRoleAssignments(organizationId, actorUserId);
+  const assignment = refreshed.assignments.find((item) => item.id === assignmentId);
+
+  if (!assignment) {
+    throw new AuthError('CRM role assignment not found after update', 500);
+  }
+
+  await auditAction({
+    organizationId,
+    userId: actorUserId,
+    entityType: 'crm_user_role_assignment',
+    entityId: assignment.id,
+    action: payload.isActive ? 'update' : 'deactivate',
+    beforeData: current,
+    afterData: assignment
+  });
+
+  return assignment;
+}
+
+export async function deleteCrmUserRoleAssignment(
+  organizationId: string,
+  actorUserId: string,
+  assignmentId: string
+) {
+  const current = await db.query.crmUserRoleAssignments.findFirst({
+    where: and(
+      eq(crmUserRoleAssignments.id, assignmentId),
+      eq(crmUserRoleAssignments.organizationId, organizationId)
+    )
+  });
+
+  if (!current || current.deletedAt) {
+    throw new AuthError('CRM role assignment not found', 404);
+  }
+
+  await db
+    .update(crmUserRoleAssignments)
+    .set({
+      isActive: false,
+      isPrimary: false,
+      deletedAt: new Date(),
+      updatedAt: new Date()
+    })
+    .where(eq(crmUserRoleAssignments.id, assignmentId));
+
+  await ensurePrimaryAssignmentForUser(organizationId, current.userId);
+
+  await auditAction({
+    organizationId,
+    userId: actorUserId,
+    entityType: 'crm_user_role_assignment',
+    entityId: assignmentId,
+    action: 'delete',
+    beforeData: current
+  });
+}
+
+export async function listCrmRoleAssignmentsForUser(
+  organizationId: string,
+  actorUserId: string,
+  userId: string
+) {
+  const data = await listResolvedCrmRoleAssignments(organizationId, actorUserId);
+
+  return data.assignments.filter((assignment) => assignment.userId === userId);
+}
+
+export function parseRoleAssignmentScopeMode(value: string): CrmRoleAssignmentScopeMode {
+  if (!isRoleAssignmentScopeMode(value)) {
+    throw new AuthError('Invalid role assignment scope mode', 400);
+  }
+
+  return value;
+}
+
+export async function getRoleAssignmentReferenceSummaries(organizationId: string) {
+  const [roleProfiles, usersInOrganization, branches, productTypes] = await Promise.all([
+    db
+      .select({
+        id: crmRoleProfiles.id,
+        code: crmRoleProfiles.code,
+        name: crmRoleProfiles.name
+      })
+      .from(crmRoleProfiles)
+      .where(
+        and(
+          eq(crmRoleProfiles.organizationId, organizationId),
+          eq(crmRoleProfiles.isActive, true),
+          isNull(crmRoleProfiles.deletedAt)
+        )
+      )
+      .orderBy(asc(crmRoleProfiles.name)),
+    db
+      .select({
+        id: users.id,
+        name: users.name,
+        email: users.email
+      })
+      .from(memberships)
+      .innerJoin(users, eq(users.id, memberships.userId))
+      .where(eq(memberships.organizationId, organizationId))
+      .orderBy(asc(users.name)),
+    getUserBranches(),
+    getActiveOptionsByCategory('crm_product_type', { organizationId })
+  ]);
+
+  return {
+    roleProfiles,
+    users: [...new Map(usersInOrganization.map((row) => [row.id, row])).values()],
+    branches: branches.map((branch) => ({
+      id: branch.id,
+      code: branch.code,
+      label: branch.name
+    })),
+    productTypes: productTypes.map((option) => ({
+      id: option.id,
+      code: option.code,
+      label: option.label
+    }))
+  };
+}
--- a/src/lib/auth/crm-access.ts
+++ b/src/lib/auth/crm-access.ts
@@ -1,18 +1,23 @@
 import { and, eq, isNull } from 'drizzle-orm';
-import { crmRoleProfiles, memberships } from '@/db/schema';
+import { crmRoleProfiles, crmUserRoleAssignments, memberships } from '@/db/schema';
+import { ensureCrmRoleAssignmentsBackfillForMembership } from '@/features/foundation/crm-role-assignments/server/service';
 import { db } from '@/lib/db';
 import {
  ALL_PERMISSIONS,
  type CrmApprovalAuthority,
+  type CrmEffectiveScopeMode,
  type CrmOwnershipScope,
+  type CrmRoleAssignmentScopeMode,
  type CrmScopeMode,
  getDefaultBusinessRole,
+  getDefaultPermissions,
+  getMembershipBasePermissions,
  getRoleProfileDefinition,
  isApprovalAuthority,
  isMembershipRole,
  isOwnershipScope,
+  isRoleAssignmentScopeMode,
  isScopeMode,
-  resolveEffectivePermissions,
  type MembershipRole,
  type Permission,
  type SystemRole
@@ -21,12 +26,13 @@ import {
 export interface ResolvedCrmAccess {
  membershipRole: MembershipRole;
  businessRole: string;
+  businessRoles: string[];
  permissions: Permission[];
  branchScopeIds: string[];
  productTypeScopeIds: string[];
  ownershipScope: CrmOwnershipScope;
-  branchScopeMode: CrmScopeMode;
-  productScopeMode: CrmScopeMode;
+  branchScopeMode: CrmEffectiveScopeMode;
+  productScopeMode: CrmEffectiveScopeMode;
  approvalAuthority: CrmApprovalAuthority;
  roleProfileName: string | null;
 }
@@ -53,6 +59,153 @@ function normalizeStringArray(value: unknown) {
    : [];
 }

+const OWNERSHIP_SCOPE_RANK: Record<CrmOwnershipScope, number> = {
+  monitor: 0,
+  own: 1,
+  team: 2,
+  organization: 3
+};
+
+const APPROVAL_AUTHORITY_RANK: Record<CrmApprovalAuthority, number> = {
+  none: 0,
+  manager: 1,
+  department: 2,
+  final: 3
+};
+
+function getMostPermissiveOwnershipScope(scopes: CrmOwnershipScope[]) {
+  return scopes.reduce<CrmOwnershipScope>(
+    (current, scope) =>
+      OWNERSHIP_SCOPE_RANK[scope] > OWNERSHIP_SCOPE_RANK[current] ? scope : current,
+    'own'
+  );
+}
+
+function getMostPermissiveApprovalAuthority(authorities: CrmApprovalAuthority[]) {
+  return authorities.reduce<CrmApprovalAuthority>(
+    (current, authority) =>
+      APPROVAL_AUTHORITY_RANK[authority] > APPROVAL_AUTHORITY_RANK[current]
+        ? authority
+        : current,
+    'none'
+  );
+}
+
+function resolveEffectiveScopeFromAssignments(input: {
+  assignmentMode: CrmRoleAssignmentScopeMode;
+  assignmentIds: string[];
+  profileMode: CrmScopeMode;
+}) {
+  if (input.assignmentMode === 'all') {
+    return { mode: 'all' as const, ids: [] as string[] };
+  }
+
+  if (input.assignmentMode === 'none') {
+    return { mode: 'none' as const, ids: [] as string[] };
+  }
+
+  if (input.assignmentMode === 'selected') {
+    return input.assignmentIds.length
+      ? { mode: 'assigned' as const, ids: input.assignmentIds }
+      : { mode: 'none' as const, ids: [] as string[] };
+  }
+
+  if (input.profileMode === 'all') {
+    return { mode: 'all' as const, ids: [] as string[] };
+  }
+
+  return input.assignmentIds.length
+    ? { mode: 'assigned' as const, ids: input.assignmentIds }
+    : { mode: 'none' as const, ids: [] as string[] };
+}
+
+function combineEffectiveScopes(
+  scopes: Array<{ mode: CrmEffectiveScopeMode; ids: string[] }>
+): { mode: CrmEffectiveScopeMode; ids: string[] } {
+  if (scopes.some((scope) => scope.mode === 'all')) {
+    return { mode: 'all', ids: [] };
+  }
+
+  const mergedIds = [...new Set(scopes.flatMap((scope) => scope.ids))];
+
+  if (mergedIds.length > 0) {
+    return {
+      mode: 'assigned',
+      ids: mergedIds
+    };
+  }
+
+  return { mode: 'none', ids: [] };
+}
+
+function buildLegacyFallbackAccess(input: {
+  systemRole: SystemRole;
+  membership: typeof memberships.$inferSelect;
+  membershipRole: MembershipRole;
+  businessRole: string;
+  roleProfile: typeof crmRoleProfiles.$inferSelect | undefined;
+}) {
+  const defaultDefinition = getRoleProfileDefinition(input.businessRole);
+  const ownershipScope: CrmOwnershipScope = isOwnershipScope(input.roleProfile?.ownershipScope ?? '')
+    ? (input.roleProfile!.ownershipScope as CrmOwnershipScope)
+    : (defaultDefinition?.ownershipScope ?? 'own');
+  const branchScopeMode =
+    normalizeStringArray(input.membership.branchScopeIds).length > 0
+      ? 'assigned'
+      : (isScopeMode(input.roleProfile?.branchScopeMode ?? '')
+          ? (input.roleProfile!.branchScopeMode as CrmScopeMode)
+          : (defaultDefinition?.branchScopeMode ?? 'assigned'));
+  const productScopeMode =
+    normalizeStringArray(input.membership.productTypeScopeIds).length > 0
+      ? 'assigned'
+      : (isScopeMode(input.roleProfile?.productScopeMode ?? '')
+          ? (input.roleProfile!.productScopeMode as CrmScopeMode)
+          : (defaultDefinition?.productScopeMode ?? 'assigned'));
+  const approvalAuthority: CrmApprovalAuthority = isApprovalAuthority(
+    input.roleProfile?.approvalAuthority ?? ''
+  )
+    ? (input.roleProfile!.approvalAuthority as CrmApprovalAuthority)
+    : (defaultDefinition?.approvalAuthority ?? 'none');
+  const permissions =
+    input.systemRole === 'super_admin'
+      ? ALL_PERMISSIONS
+      : [
+          ...new Set([
+            ...getDefaultPermissions(input.membershipRole, input.businessRole),
+            ...(input.roleProfile?.permissions?.filter(
+              (value): value is Permission => typeof value === 'string'
+            ) ?? []),
+            ...(input.membership.permissions?.filter(
+              (value): value is Permission => typeof value === 'string'
+            ) ?? [])
+          ])
+        ];
+
+  return {
+    membershipRole: input.membershipRole,
+    businessRole: input.businessRole,
+    businessRoles: [input.businessRole],
+    permissions,
+    branchScopeIds: normalizeStringArray(input.membership.branchScopeIds),
+    productTypeScopeIds: normalizeStringArray(input.membership.productTypeScopeIds),
+    ownershipScope,
+    branchScopeMode:
+      branchScopeMode === 'all'
+        ? 'all'
+        : normalizeStringArray(input.membership.branchScopeIds).length > 0
+          ? 'assigned'
+          : 'none',
+    productScopeMode:
+      productScopeMode === 'all'
+        ? 'all'
+        : normalizeStringArray(input.membership.productTypeScopeIds).length > 0
+          ? 'assigned'
+          : 'none',
+    approvalAuthority,
+    roleProfileName: input.roleProfile?.name ?? defaultDefinition?.name ?? null
+  } satisfies ResolvedCrmAccess;
+}
+
 export async function resolveCrmMembershipAccess(input: {
  systemRole: SystemRole;
  organizationId: string;
@@ -62,6 +215,7 @@ export async function resolveCrmMembershipAccess(input: {
    return {
      membershipRole: 'admin',
      businessRole: input.membership.businessRole,
+      businessRoles: [input.membership.businessRole],
      permissions: ALL_PERMISSIONS,
      branchScopeIds: [],
      productTypeScopeIds: [],
@@ -77,6 +231,12 @@ export async function resolveCrmMembershipAccess(input: {
    ? input.membership.role
    : 'user';
  const businessRole = input.membership.businessRole || getDefaultBusinessRole(membershipRole);
+  await ensureCrmRoleAssignmentsBackfillForMembership(
+    input.organizationId,
+    input.membership,
+    input.membership.userId
+  );
+
  const [roleProfile] = await db
    .select()
    .from(crmRoleProfiles)
@@ -89,40 +249,103 @@ export async function resolveCrmMembershipAccess(input: {
      )
    )
    .limit(1);
-  const defaultDefinition = getRoleProfileDefinition(businessRole);
+  const assignmentRows = await db
+    .select({
+      assignment: crmUserRoleAssignments,
+      profileCode: crmRoleProfiles.code,
+      profileName: crmRoleProfiles.name,
+      profilePermissions: crmRoleProfiles.permissions,
+      profileOwnershipScope: crmRoleProfiles.ownershipScope,
+      profileBranchScopeMode: crmRoleProfiles.branchScopeMode,
+      profileProductScopeMode: crmRoleProfiles.productScopeMode,
+      profileApprovalAuthority: crmRoleProfiles.approvalAuthority
+    })
+    .from(crmUserRoleAssignments)
+    .innerJoin(crmRoleProfiles, eq(crmRoleProfiles.id, crmUserRoleAssignments.roleProfileId))
+    .where(
+      and(
+        eq(crmUserRoleAssignments.organizationId, input.organizationId),
+        eq(crmUserRoleAssignments.userId, input.membership.userId),
+        eq(crmUserRoleAssignments.isActive, true),
+        isNull(crmUserRoleAssignments.deletedAt),
+        isNull(crmRoleProfiles.deletedAt)
+      )
+    );

-  const ownershipScope: CrmOwnershipScope = isOwnershipScope(roleProfile?.ownershipScope ?? '')
-    ? (roleProfile.ownershipScope as CrmOwnershipScope)
-    : (defaultDefinition?.ownershipScope ?? 'own');
-  const branchScopeMode: CrmScopeMode = isScopeMode(roleProfile?.branchScopeMode ?? '')
-    ? (roleProfile.branchScopeMode as CrmScopeMode)
-    : (defaultDefinition?.branchScopeMode ?? 'assigned');
-  const productScopeMode: CrmScopeMode = isScopeMode(roleProfile?.productScopeMode ?? '')
-    ? (roleProfile.productScopeMode as CrmScopeMode)
-    : (defaultDefinition?.productScopeMode ?? 'assigned');
-  const approvalAuthority: CrmApprovalAuthority = isApprovalAuthority(
-    roleProfile?.approvalAuthority ?? ''
-  )
-    ? (roleProfile.approvalAuthority as CrmApprovalAuthority)
-    : (defaultDefinition?.approvalAuthority ?? 'none');
+  if (!assignmentRows.length) {
+    return buildLegacyFallbackAccess({
+      systemRole: input.systemRole,
+      membership: input.membership,
+      membershipRole,
+      businessRole,
+      roleProfile
+    });
+  }
+
+  const primaryAssignment =
+    assignmentRows.find((row) => row.assignment.isPrimary) ?? assignmentRows[0];
+  const permissions = [
+    ...new Set([
+      ...getMembershipBasePermissions(membershipRole),
+      ...assignmentRows.flatMap((row) =>
+        (row.profilePermissions ?? []).filter(
+          (value): value is Permission => typeof value === 'string'
+        )
+      ),
+      ...(input.membership.permissions?.filter(
+        (value): value is Permission => typeof value === 'string'
+      ) ?? [])
+    ])
+  ];
+  const ownershipScopes = assignmentRows.map((row) =>
+    isOwnershipScope(row.profileOwnershipScope)
+      ? (row.profileOwnershipScope as CrmOwnershipScope)
+      : 'own'
+  );
+  const approvalAuthorities = assignmentRows.map((row) =>
+    isApprovalAuthority(row.profileApprovalAuthority)
+      ? (row.profileApprovalAuthority as CrmApprovalAuthority)
+      : 'none'
+  );
+  const branchScope = combineEffectiveScopes(
+    assignmentRows.map((row) =>
+      resolveEffectiveScopeFromAssignments({
+        assignmentMode: isRoleAssignmentScopeMode(row.assignment.branchScopeMode)
+          ? row.assignment.branchScopeMode
+          : 'inherit',
+        assignmentIds: normalizeStringArray(row.assignment.branchScopeIds),
+        profileMode: isScopeMode(row.profileBranchScopeMode)
+          ? (row.profileBranchScopeMode as CrmScopeMode)
+          : 'assigned'
+      })
+    )
+  );
+  const productScope = combineEffectiveScopes(
+    assignmentRows.map((row) =>
+      resolveEffectiveScopeFromAssignments({
+        assignmentMode: isRoleAssignmentScopeMode(row.assignment.productTypeScopeMode)
+          ? row.assignment.productTypeScopeMode
+          : 'inherit',
+        assignmentIds: normalizeStringArray(row.assignment.productTypeScopeIds),
+        profileMode: isScopeMode(row.profileProductScopeMode)
+          ? (row.profileProductScopeMode as CrmScopeMode)
+          : 'assigned'
+      })
+    )
+  );

  return {
    membershipRole,
-    businessRole,
-    permissions: resolveEffectivePermissions({
-      systemRole: input.systemRole,
-      membershipRole,
-      businessRole,
-      rolePermissions: roleProfile?.permissions ?? defaultDefinition?.permissions ?? [],
-      directPermissions: input.membership.permissions
-    }),
-    branchScopeIds: normalizeStringArray(input.membership.branchScopeIds),
-    productTypeScopeIds: normalizeStringArray(input.membership.productTypeScopeIds),
-    ownershipScope,
-    branchScopeMode,
-    productScopeMode,
-    approvalAuthority,
-    roleProfileName: roleProfile?.name ?? defaultDefinition?.name ?? null
+    businessRole: primaryAssignment?.profileCode ?? businessRole,
+    businessRoles: assignmentRows.map((row) => row.profileCode),
+    permissions,
+    branchScopeIds: branchScope.ids,
+    productTypeScopeIds: productScope.ids,
+    ownershipScope: getMostPermissiveOwnershipScope(ownershipScopes),
+    branchScopeMode: branchScope.mode,
+    productScopeMode: productScope.mode,
+    approvalAuthority: getMostPermissiveApprovalAuthority(approvalAuthorities),
+    roleProfileName: primaryAssignment?.profileName ?? roleProfile?.name ?? null
  };
 }

@@ -131,10 +354,14 @@ export function hasBranchScopeAccess(access: BranchScopedAccess, branchId?: stri
    return true;
  }

-  if (access.branchScopeMode === 'all' || access.branchScopeIds.length === 0) {
+  if (access.branchScopeMode === 'all') {
    return true;
  }

+  if (access.branchScopeMode === 'none' || access.branchScopeIds.length === 0) {
+    return false;
+  }
+
  return access.branchScopeIds.includes(branchId);
 }

@@ -143,9 +370,13 @@ export function hasProductScopeAccess(access: ProductScopedAccess, productTypeId
    return true;
  }

-  if (access.productScopeMode === 'all' || access.productTypeScopeIds.length === 0) {
+  if (access.productScopeMode === 'all') {
    return true;
  }

+  if (access.productScopeMode === 'none' || access.productTypeScopeIds.length === 0) {
+    return false;
+  }
+
  return access.productTypeScopeIds.includes(productTypeId);
 }
--- a/src/lib/auth/rbac.ts
+++ b/src/lib/auth/rbac.ts
@@ -11,6 +11,7 @@ export const BUSINESS_ROLES = [
 ] as const;
 export const OWNERSHIP_SCOPES = ['own', 'team', 'organization', 'monitor'] as const;
 export const SCOPE_MODES = ['all', 'assigned'] as const;
+export const ROLE_ASSIGNMENT_SCOPE_MODES = ['all', 'selected', 'none', 'inherit'] as const;
 export const APPROVAL_AUTHORITIES = ['none', 'manager', 'department', 'final'] as const;

 export type SystemRole = (typeof SYSTEM_ROLES)[number];
@@ -18,6 +19,8 @@ export type MembershipRole = (typeof MEMBERSHIP_ROLES)[number];
 export type BusinessRole = string;
 export type CrmOwnershipScope = (typeof OWNERSHIP_SCOPES)[number];
 export type CrmScopeMode = (typeof SCOPE_MODES)[number];
+export type CrmRoleAssignmentScopeMode = (typeof ROLE_ASSIGNMENT_SCOPE_MODES)[number];
+export type CrmEffectiveScopeMode = 'all' | 'assigned' | 'none';
 export type CrmApprovalAuthority = (typeof APPROVAL_AUTHORITIES)[number];

 export const PERMISSIONS = {
@@ -91,6 +94,11 @@ export const PERMISSIONS = {
  crmRoleUpdate: 'crm.role.update',
  crmRoleDelete: 'crm.role.delete',
  crmRoleAssign: 'crm.role.assign',
+  crmRoleAssignmentRead: 'crm.role.assignment.read',
+  crmRoleAssignmentCreate: 'crm.role.assignment.create',
+  crmRoleAssignmentUpdate: 'crm.role.assignment.update',
+  crmRoleAssignmentDelete: 'crm.role.assignment.delete',
+  crmRoleAssignmentManage: 'crm.role.assignment.manage',
  crmMasterOptionRead: 'crm.master_option.read',
  crmMasterOptionCreate: 'crm.master_option.create',
  crmMasterOptionUpdate: 'crm.master_option.update',
@@ -249,6 +257,7 @@ const DEFAULT_ROLE_DEFINITIONS: Record<string, Omit<CrmRoleProfileDefinition, 'c
      PERMISSIONS.crmApprovalReturn,
      PERMISSIONS.crmDashboardRead,
      PERMISSIONS.crmDashboardExport,
+      PERMISSIONS.crmRoleAssignmentRead,
      PERMISSIONS.crmDocumentArtifactRead,
      PERMISSIONS.crmDocumentArtifactDownload,
      PERMISSIONS.crmQuotationDocumentPreview,
@@ -280,6 +289,7 @@ const DEFAULT_ROLE_DEFINITIONS: Record<string, Omit<CrmRoleProfileDefinition, 'c
      PERMISSIONS.crmApprovalReturn,
      PERMISSIONS.crmDashboardRead,
      PERMISSIONS.crmDashboardExport,
+      PERMISSIONS.crmRoleAssignmentRead,
      PERMISSIONS.crmDocumentArtifactRead,
      PERMISSIONS.crmDocumentArtifactDownload,
      PERMISSIONS.crmQuotationDocumentPreview,
@@ -311,6 +321,7 @@ const DEFAULT_ROLE_DEFINITIONS: Record<string, Omit<CrmRoleProfileDefinition, 'c
      PERMISSIONS.crmApprovalReturn,
      PERMISSIONS.crmDashboardRead,
      PERMISSIONS.crmDashboardExport,
+      PERMISSIONS.crmRoleAssignmentRead,
      PERMISSIONS.crmDocumentArtifactRead,
      PERMISSIONS.crmDocumentArtifactDownload,
      PERMISSIONS.crmQuotationDocumentPreview,
@@ -333,6 +344,11 @@ const DEFAULT_ROLE_DEFINITIONS: Record<string, Omit<CrmRoleProfileDefinition, 'c
      PERMISSIONS.crmRoleUpdate,
      PERMISSIONS.crmRoleDelete,
      PERMISSIONS.crmRoleAssign,
+      PERMISSIONS.crmRoleAssignmentRead,
+      PERMISSIONS.crmRoleAssignmentCreate,
+      PERMISSIONS.crmRoleAssignmentUpdate,
+      PERMISSIONS.crmRoleAssignmentDelete,
+      PERMISSIONS.crmRoleAssignmentManage,
      PERMISSIONS.crmMasterOptionRead,
      PERMISSIONS.crmMasterOptionCreate,
      PERMISSIONS.crmMasterOptionUpdate,
@@ -438,6 +454,11 @@ export const CRM_PERMISSION_GROUPS: PermissionGroup[] = [
      { key: PERMISSIONS.crmRoleUpdate, label: 'Update roles' },
      { key: PERMISSIONS.crmRoleDelete, label: 'Delete roles' },
      { key: PERMISSIONS.crmRoleAssign, label: 'Assign role scopes' },
+      { key: PERMISSIONS.crmRoleAssignmentRead, label: 'Read user role assignments' },
+      { key: PERMISSIONS.crmRoleAssignmentCreate, label: 'Create user role assignments' },
+      { key: PERMISSIONS.crmRoleAssignmentUpdate, label: 'Update user role assignments' },
+      { key: PERMISSIONS.crmRoleAssignmentDelete, label: 'Delete user role assignments' },
+      { key: PERMISSIONS.crmRoleAssignmentManage, label: 'Manage user role assignments' },
      { key: PERMISSIONS.crmMasterOptionRead, label: 'Read master options' },
      { key: PERMISSIONS.crmMasterOptionCreate, label: 'Create master options' },
      { key: PERMISSIONS.crmMasterOptionUpdate, label: 'Update master options' },
@@ -473,7 +494,7 @@ export const CRM_PERMISSION_GROUPS: PermissionGroup[] = [

 export const ALL_PERMISSIONS = Object.values(PERMISSIONS) as Permission[];

-function getMembershipBasePermissions(role: MembershipRole): Permission[] {
+export function getMembershipBasePermissions(role: MembershipRole): Permission[] {
  if (role === 'admin') {
    return [
      PERMISSIONS.productsRead,
@@ -569,6 +590,10 @@ export function isScopeMode(value: string): value is CrmScopeMode {
  return SCOPE_MODES.includes(value as CrmScopeMode);
 }

+export function isRoleAssignmentScopeMode(value: string): value is CrmRoleAssignmentScopeMode {
+  return ROLE_ASSIGNMENT_SCOPE_MODES.includes(value as CrmRoleAssignmentScopeMode);
+}
+
 export function isApprovalAuthority(value: string): value is CrmApprovalAuthority {
  return APPROVAL_AUTHORITIES.includes(value as CrmApprovalAuthority);
 }
--- a/src/types/next-auth.d.ts
+++ b/src/types/next-auth.d.ts
@@ -20,6 +20,10 @@ declare module 'next-auth' {
        slug: string;
        role: string;
        businessRole: string;
+        businessRoles: string[];
+        branchScopeIds: string[];
+        productTypeScopeIds: string[];
+        ownershipScope: string;
        plan: string;
        imageUrl: string | null;
      }>;
@@ -52,6 +56,10 @@ declare module 'next-auth/jwt' {
      slug: string;
      role: string;
      businessRole: string;
+      businessRoles: string[];
+      branchScopeIds: string[];
+      productTypeScopeIds: string[];
+      ownershipScope: string;
      plan: string;
      imageUrl: string | null;
    }>;