[gdm-list] Disable User Switching on lockscreen

[Laverne Schrock <schr1230 morris umn edu>]

Hi,

I have a Fedora 24 system on which I would like to disable user switching.
By following the steps listed here:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Desktop_Migration_and_Administration_Guide/lockdown-logout.html
I can remove the "Switch User" button from the system menu. However,
the user can still lock the screen and then click "Log in as another user"
right in GDM which defeats the purpose.

So here is the question. Is there a way to enable screen locking and disable
user switching on modern GDM?

Thanks,
Laverne Schrock