Player lurking / hiding in a game

Hi all,  I'm wondering if there's any way for a player to come into a game and "hide" / appear offline - basically, we have a guest player coming in half way through a session next weekend, and they'd like to listen in / be prepared, but very much unseen by the other players so they can turn up as a surprise. Is that at all possible? I know their token could just be kept on the GM layer - but what about the player nameplate? Thanks!

That's not Possible.  You'd probably need to stream your view, or a player mode version of your view to them during the period where they should remain hidden.  Note that if you add them to the game, they will appear on the Game Details Page regardless of if they have joined a session of the game.

Thanks, I thought that might be the case, I just wanted to check :)