You can leave a team at any time by choosing the team name and then selecting More options 
> Leave the team.
You'll receive a confirmation message to make sure that you want to leave the team.
Note: You can leave a team on your own, but only an admin can remove you from an org or an org-wide team.
You must go to the desktop or web app to leave a team.
You can leave a team at any time by tapping Teams 
, going to the team name, and then tapping More options 
> Leave the team.
Note: You can leave a team on your own, but only an admin can remove you from an org or an org-wide team.
