Board Game Arena

How does "Table Host Custom Setup" exactly work for map and faction set-up? Don't want to start a game and then be completely lost with us newbs lol

Thanks!

Sorry I can't find the answer since I don't want to start a live game yet: Can you do a live game and then pause, then have everyone join at another time? I'm assuming in friendly mode we all can simply walk away and come back - but is there an official way to pause it if you want ranked games? Than...