Make User Into a User Group Admin
Account owners and account admins with the right to edit and delete users and collaborators can make users into group admins.
You can make any regular user or account admin into a user group admin. The users that you add as a group admin can either be one of the group members or a user from outside of the user group.
External users and collaborators cannot be user group admins.
Click your profile image in the workspace's upper-right corner.
Select Settings from the dropdown.
Click Users in the left panel to open a list of all users and groups in the account 1.
From the left side of the screen, select the relevant user group 2. If you don't see the group in the list, click next to the magnifying glass icon, start typing its name, and click its title once it appears.
Click Assign 3 located at the top of the view, to the right of No Group Admins Assigned.
If the group already has admins, click the + button next to the admin's names.
Select the user from the list that appears or start typing their name to find the user on the list 4.