We have a great tutorial over at Teamstuff TV all about leaving a team.
Or if you prefer, here's some instructions...
1. Login onto the web site at teamstuff.com
2. Find the profile of the person in the team ( might be you or your child - whomever is leaving the team ).
The profiles can be found in the left hand navigation menu.
3. Click on the profile on the left - on the right hand side their details are shown
4. Click on the teams listing - the 3 persons icon, and underneath that you should see all the teams you are part of
5. If you hover over the team you want to leave, you'll see a 'trash can' icon on the right ( as below )
5. Click on the trash can, then confirm you're leaving the team.
Note: the team stays in teamstuff - the only change is that you're no longer part of that team.