Administrators and team managers have the ability to add users and remove users from teams. To remove a user, simply navigate to the user manager tab on your portal. Click the 'teams' tab and find the team you wish to remove a user from. Next, click the pencil icon to edit the team. You will see all members of the team listed. Find the team member you wish to remove, click the pencil icon next to their name and click 'delete'.
Note: This process will remove user from the team and not delete a user altogether