To leave a group, tap on the ‘Me Tab’, then tap on the group icon 
Once you are in the group window, tap on ‘My Group’. In the lower left corner, you will be able to see a red box that says ‘Leave Group’. Tap on this box, and confirm that you would like to leave the group. Once you have done this, you will not be able to rejoin the group, unless the group is set to open invitation, or if the leader invites you again.
Once you are in the group window, tap on ‘My Group’. In the lower left corner, you will be able to see a red box that says ‘Leave Group’. Tap on this box, and confirm that you would like to leave the group. Once you have done this, you will not be able to rejoin the group, unless the group is set to open invitation, or if the leader invites you again.