Originally posted by Sammi79:

Family share doesn't work if you are playing any game from your library - only one person can use your game library at any one time.

Which pretty much defeats the entire point of it for me but your mileage may vary.

you can play different games at the same time, but not the same game twice using family share, or the same steam acct on several pcs

valheim is on sale, might as well just buy the copy for the family members account so you can play together