Virtualmin generated User Names showing up in login screen

Centos 7 - new install. Virtualmin configured and loaded using install script.

5 severs loaded loaded using restore feature.

I did not see this on my old openSuse server, but now in Centos 7 ALL the usernames created by virtualmin are showing up on the Login Screen, and of course the one I want is "off screen".

I've searched and cannot find a solution. All the Virtualmin "users" are created with a UID of 500++, and my login was created with a UID of 1000.

I've tried all the GDM workarounds, nothing helped.

Anyone have a suggestion?

Nigel.