This prevents the seat from being taken by another player. Most commonly, it designates a seat that is being held for a player who has lost all of his or her chips, but has indicated a desire to keep playing after a trip to the cash machine. The “absent” button gets used in a couple of different ways, depending on the casino. Now let’s move on to some of the other buttons you might see on a casino poker table, some of which even those with experience might have questions about. In my last article, I tried to lay out everything players new to live poker might ever want to know about the dealer button.