There is a maximum of 6 subs. Players on the individual teams are responsible for calling their own faults. Teams must be ready to play by 10 minutes past the hour. They may claim forfeit of all three games. The winning team must report the score within 24 hours to the online score reporting.
Violation can result in suspension of the player and forfeiture of the game in question.
See IM General Rules for details. All players and spectators must have an ID card in order to get on the Gym floor. Only front line players can spike and block the ball at the net. Back row players may spike from behind the 3 meter line. The service line will be marked 2 meters from the wall.