If you're looking for a way for TTD to do this automatically, it's not going to fully be able to do so. You can, however, create a rake, and adjust the players' buy-ins at the time they choose to enter the pool. The software, though, will not know who had the best hand - That is something you will need to do yourself. You can create a prize, for the amount of the rake, but you will have to manually award it to the player that had the best hand of the night. If you have a split with it, you will have to create multiple prizes, and find out how it splits up.