Removing a Group admin/s is easy. Simply:
- Select the Connect tab.
- Enter the Group.
- Tap the Group name and logo on the top of the screen to go to the Group Settings.
- Scroll down to see the members.
- Select the profile icon of a current Admin which you'd like to remove.
- Select Remove Admin.
Please remember that you also must be an Admin to remove an Admin. Here's how to assign an admin.