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...
just have him login to your computer, then log him out, then add him as a family member, steam will see both use the same ip/computer, and bam, your good
Yeah this has been a sticking point since the beta, they never responded to the thousands of comments complaining about it. It's pretty bullshit and makes this feature useless in many circumstances.