Sorry, this has not been added. To be honest it's a little out of the framework of the original design of the tables and seating management. Specifically it would require changing the size of a table automatically when a certain number of players remain. Certainly doable, the system just wasn't designed with this in mind. I suppose there are a couple of options. Changing a table's size (number of seats), making a seat available that was previously unavailable, or reserving a table. All of which would currently require manual intervention. Automating it would be the goal. I'll put it on my list to look into with this perspective in mind, but I can't make any promises.