As a Platform Manager:
  1. Navigate to Core
  2. Under Users > Edit User Profile Data.
  3. Search/select your user.
  4. Scroll to the lower left under System Information.
  5. Click Role Membership.
  6. Click Edit in the upper right corner.
  7. Check off the Community Group Manager role.
  8. Click Save.
This will then give users access to manage Community Groups through onCampus.

NOTE: Once you have given a user a new role, they must completely log out and back in to see the updated role changes. If you are impersonating the user, you must log out completely, then log back in and impersonate the user to see their role changes.