Leaving Teams 3 steps
When you complete a project or leave a company, and a team is no longer needed, you can leave it to keep your account clutter-free and up-to-date.
To do so, jump onto the "Teams" page by clicking your organization logo in the top left of the screen, and selecting "People and Teams." Once there, click the "Teams" tab.
Then, on the "Teams" page, click the "..." to the right of the team name and select “Leave Team”. If you instead want to delete a team, follow the steps in this article.
This will open a panel on the right-hand side of the screen where you'll be asked, if you have any open tasks in the team to unassign, complete or reassign them to another teammate.
Once you leave a team you will no longer have access to any of its projects or tasks. If you do this by mistake, you will need to request an invitation from the owner of the team or a team admin to regain access. If you're ready to go, though, just select “Leave” to complete the process.