Once I understood the setup, it went well. I'm using the stand-alone version rather than going to google. If you do that, you don't need to send an email to the "guest". Just invite, and then at the guest (I use teamviewer), run SC Now and enter your account name, name of guest PC, and password (for that session). It will then connect the guest.
The password is not your account password. It's only a password for the session, I use 1234 all the time. The guest PC name is whatever name you entered for the invite.
John.