Like Organizations, Teams also have different permission levels. Members of a team either have Team Admin permissions or Default permissions. A Team Admin is assigned his or her permission status by:
A) a Hootsuite Account Executive or Customer Success Manager
B) anyone with Default permissions
C) Organization Admins or Super-Admins
D) those within existing teams who have Default permissions
https://www.youtube.com/watch?v=NNgm2lWIeZo