Adding an admin to a team
Teams also have admins which have the ability to add / remove members, and edit the name and description. To add a member as an admin, open your team's Members tab and click on the button that says "Normal" to the right of the member's avatar in the member list on the team's profile. Select "Admin" in the Change Permissions drop down menu.
On a free team, all team members are team admins. This means all members are able to manage the team profile and invite/remove users.
On Business Class teams, team admins also have automatic board admin access to all team boards, even private team boards.