You can likely use it from different physical locations. But just know that I’m order to set it up, you have to login with your account on their computer at some point to enable the family sharing feature. So unless you go there qnd do it, or remote into their computer to do it, or give them your password, you can’t use that feature. Some level of trust in each other is required.
That is not how the new families work. The new on all you need to do is sent an invite and they’ll be able to join the family. No need to log in their computers or authorise anything, just a simple invite.
It actually is how it worked in the beta at least. I’ve been using it for several months with my friends and the invite wouldn’t work unless I had logged into steam on their pc previously.
That is certainly not the case, either something unexpected happened or either of you didn’t have the families beta on. I have never logged in someone else’s PC and neither have someone logged on mine, I always use Steam on beta and I was able to send family invites to my friends, however only the ones in my region (country) were able to join.
