After selecting a game, clicking Add table gives you the option to add new games simultaneously. More precisely, you can choose the game and the table you want to play at. You can choose games directly by clicking on the desired one or from the Lobby (Choose from lobby). Lobby is the home page where you can choose which of the offered games you want to play.
How do I quit the game?
If you want to quit a certain game, it’s enough to click on Close table in the lower left corner. And if you want to get up from the table, click on Stand up.