Owners and admins can remove a teammate from the workspace.
Go to Settings → Members.
Find the teammate, open their three-dot menu, and choose Remove from workspace.
Confirm.
What happens after removal
The removed teammate loses access to the workspace and to every project they were part of, immediately.
Their work stays in the workspace. Documents they uploaded, projects they created, and Deal Verifier runs they started remain available to everyone else who has access to those items.
You can re-invite them later. They will need to accept a new invite.
Removing someone does not delete any of their content. If you want to delete a project they created, do that separately. See Delete a project.