List all available users from my enterprise. Supports filtering by status (active/inactive) and expanding related data. Use ?status=active to get only active users (users with cost center permissions). Use ?status=inactive to get only inactive users (users without cost center permissions). Use ?expand=enterprise to include enterprise details in the response. Use ?expand=cost_centers to include cost centers grouped by subsidiary. Multiple expand parameters can be combined with commas: ?expand=enterprise,cost_centers.