Do you need to de-provision a license? Remove a member!
Navigate to menu -> Manage account -> Members
The member list is shown.
Search for a member by email in the search bar.
To remove someone from your workspace, click the Trash Bin icon next to their name.
When a member is removed, they are no longer licensed through your account.
That email will still have access to any projects they have been shared. To remove access to projects, use bulk sharing.