Trio's will consist of 9 frames over 3 sets. The first set will comprise of 3 frames. The 2nd set a sub can be made if you have more than 3 players and then 3 more frames will be played. The final set another sub can be made to bring in the player subbed out in set 2 and then the final 3 frames can be played. Match is first to 5 however it is reccommended to play out the match.