VBA Dynamic Dropdown Filter for CRM

I'm developing an Excel-based CRM/Contact Manager and need assistance completing a VBA module. The module should dynamically filter a dropdown list of regions based on the logged-in user's role-based permissions.

Key Requirements:
- Support for role-based permissions: Admin, Manager, Staff
- Admin and Manager should have access to all regions
- Staff access should be limited based on defined criteria

Ideal Skills and Experience:
- Proficiency in Excel and VBA
- Experience with role-based permission systems
- Familiarity with dynamic dropdowns in Excel

Looking for a freelancer who can efficiently implement this functionality.