If you have been assigned team admin rights, you will be able to manage the permissions of other users within the Team Settings.
To access these settings, click on the EDIT TEAM button above the list of team members within the Team Dashboard.
Tick a radio button to assign or remove admin permissions for a team member.
Note: If you are the only Team Admin, you will not be able to remove these permissions for yourself. This ensures there is always a Team Admin for the team.