We've been having trouble with students in our new iMac lab not logging out, which ends up locking the screen and preventing anybody else from logging into the machine. While figuring out how to get the "Switch User" button to show would be a solution, we'd prefer to just disable the lock screen entirely.
Is there an easy way to both prevent users from locking the screen (^⌘Q) as well as disabling Sleep and Screensaver when users are logged in?
If there's a better way to approach the problem I'm all ears.
Thanks!