To remove a user from your workspace and revoke their access to shared documents:
Go to Settings → Members
Find the user, then click the three-dot menu (•••) next to their name or email
Select Remove from workspace
Once removed, the user will lose access to your workspace. If they try to log in or open the workspace, they’ll be notified of the removal and redirected to another workspace they belong to—or prompted to create a new one if none exists.
Your subscription billing will stay the same, and their seat will become available for you to assign to another member at any time.