Follow these three steps to remove a team member:
1) Select the team member’s contact page to alter their individual permissions.
2) Click Manage Permissions near the bottom of the page.
3) Select Revoke All Permissions at the top right of the page.
Once you click Revoke All Permissions, that person will immediately lose all permissions and will be defaulted to a harmless contact.
Do not click Revoke All Permissions unless you want the person to be defaulted to a contact.