In the case that you no longer want to serve as the leader of your team, please notify your team first so you can work together to identify a successor.
From the Team Workspace, you can click on the gear icon above the list of team members to access the Team Profile to make changes to team membership.
Once in your Team Profile, you can hover over the team member whom you would like to "Make Team Lead".
Once selected, you will receive a confirmation message that in doing so you will be stepping down.
To leave your team completely, learn how through this article. In the case that you leave the team without appointing a new team lead, the most recently active team member will be automatically assigned. They will receive an email to let them know of the new assignment.