> You have to log in on their computer to enable it, and if they play a game from your library you can't play it at the same time (same as with a physical disk)

> You have to log in on their computer to enable it, and if they play a game from your library you can't play it at the same time (same as with a physical disk). If you are family sharing then you cannot play ANY other game if someone else is playing. If they are playing CS:GO from your library and you try to launch a game in your library you see a notice telling you that the other person will be booted. The player sees similar.