Hello, I know that is possible (on designer) adding a Group Admin on grou

Oh I see, that's what you meant by "Group Admin"; a Group that will be an Administrator of another Group. That said, you're right the out of the box one works only for User type.

You will need to create your own custom smart service since the "Update Group Membership Rules" custom smart service suggested above is for Members not Admins.

Oh I see, that's what you meant by "Group Admin"; a Group that will be an Administrator of another Group. That said, you're right the out of the box one works only for User type.

You will need to create your own custom smart service since the "Update Group Membership Rules" custom smart service suggested above is for Members not Admins.