Hello! We are excited to announce Steam Families is now available for all users. Steam Families is a collection of new and existing family-related features. It replaces both Steam Family Sharing and Steam Family View, giving you a single location to manage which games your family can access and when they can play. Create a Steam Family To get started, you can create a Steam Family and then invite up to 5 family members.
when you play a game that multiple people have, you can choose which copy is being used. The owner of that copy and the one playing get banned
Thanks, that explains it. So there is a pop-up when you try to play a game from the common pool and you have to choose who you are borrowing from?