To view all people belonging to a Business Role and Location combination, do the following:
On the navbar, expand Role Management and click Business Roles and Locations.
Select the Allowed Combinations tab and search for the target Business Role and Location.
Click the Business Role and Location link.
This directs you to the View page for the Business Role and Location combination. View pages allow you to view and manage the objects to which they pertain.
On the View page, select the Members subtab and then expand the All People in Business Role and Location accordion.
You should see all people assigned to the Business Role and Location.