Function Keys not working

Some, burt not all, users have nonworking Function keys. Why would they work for some users and not others? Is there a property to set to enable function keys?

It depends. It’s possible that they don’t have permission to access certain functions like Zoom (CTRL+F8), Field Filter (F7), Table Filter (CTRL+F7), Flow Filter (SHIFT+F7), Sort (SHIFT+F8), etc. This is configured in the Security options and could be what you are witnessing. Can you specify which shortcut keys are not working?