The group admin role can be shared with several people.  It is at the discretion of the organization to determine the qualifications of who receives admin access. An existing admin can add others to manage the group.   

1. Navigate to the group page.  
2. On the group header, tap Members.
3. On the Members tab, look for the person’s profile.
4. Tap the 3 dots menu for the member's profile, and choose Make group admin.
5. A pop-up will appear.  Tap the OK button to confirm adding the person as admin.  This person will be added to the Admin tab.
6. The person you added as admin will receive an app notification of this change.