This is How Xbox One's Game and Gold Sharing Works

[SvennoJ]

That's not really sharing is it? You can access your account from a different box, which you can do already?
Anyone can already share my games on my 360, I guess now they can do it while getting achievements on their own gamer tag.

The question is, can you use your gold subscription on a different xbox one, while one of your family members uses gold on your xbox one. The second link suggests it's either or, not at the same time. So if you have 2 xbox ones, you'll still need 2 live accounts when one family member wants to watch Netflix while you play online on the other box.