How to invite or boot other players
Only the host (creator) of a table may invite other players. To invite players to the table, click "Invite" and a list of all of the players in the room will appear. Simply click on the name of the player you wish to invite and click "Invite." That player will receive a message asking them to join the table.
To eject a player from a table, click "Boot" and type in that player's name. That player will then be removed from your table. To prevent the offending player from re-entering the room, you can then make the room private. You can boot any player, but it's considered extremely bad sportsmanship to boot someone simply because they are beating you.
In rated games, there are restrictions on booting players. To boot a player from a rated game, they must be idle for a certain number of minutes (cards: 3 minutes; Chess: 10 minutes; other board games: 5 minutes).
If you're ever disconnected and you return in time, you may boot the player that took your seat.