1. To remove an admin from a specific group you'll need to select the specific Admin, click 'More Actions', and then 'Remove from Group'.
2. Next, you'll have the option to remove them from an existing group. Simply start typing into the box to bring up the corresponding group(s), or, if you want to remove them from all groups they have been assigned to, click on "Select All".
3. Once you click submit, the admin will be removed from the group(s) and they will lose access immediately.