An Admin is the owner of a Circle, Chat, or Room, he/she is responsible for everything that happens in the Circle, Chat, or Room.

The Co-Admin's role is to help the Admin manage the Circle/Chat/Room. The Co-Admins are managed by the Admin. Each Circle/Chat/Room can have up to 20 Co-Admins. 

Admins and Co-Admins will have a badge next to their username in the Circle/Chat/Room, so members can easily identify them.