You can easily add or remove members from teams.
Here's how:
1. From your Dashboard, click the dropdown arrow next to the team's name.
2. Click the 3 (three) stacked dots to the right of the team's name.
3. Click Team Settings.
4. In the pop-window, select Members. Then, click the dropdown arrow next to team's role.
5. Click Remove, then confirm by clicking Remove again.