Thank you for your post.
You may set up a Black and Whiltelist for restricting the accessibility of your TeamViewer.
Hope it is helpful.
This actually is not the problem I have. I have a home desktop computer that I have TeamViewer installed on so I can access my files remotely. I have a guest user profile set up on this computer, and I have blocked access to my files on the hard drive, but the guest user still has access to TeamViewer. How do I block access to TeamViewer for this guest user? The procedure you referred to only accepts email addresses from remote users.