The user has both roles because the Pending Faculty role has not reached its appointed date. Once this date has passed, the user will have the Faculty role and the past faculty role will be removed.

You can also make the user a faculty member immediately by following these steps:
  1. Navigate to Core > Users/Access > Profile
  2. Select Edit User Profile Data 
  3. Search for the user
  4. Under System Information click on Employment
  5. Click Edit (top right hand corner)
The Pending Faculty is based on the Effective Date. To employ the user immediately, click on Effective Immediately then Save & Exit.
The user will now have the Faculty role.