Can I allow/prevent multiple logon for a same user?

Multiple logons of the same user can create a security risk, hence there is an option to prevent/enable multiple logons.

1. Under the View tab click Program Settings
2. Click the Global Settings tab
3. Under the Other Global Settings header, you have the option to tick/untick “Allow multiple logons for the same user”

If you untick this option then when a user logs on to a second computer, they will automatically be logged off from the previous computer. The benefit of this is that it potentially stops someone accidentally leaving themselves logged in more than one place.