Appendices included in these rules outline rules changes and additions specific to several variations of the sport.

Event Organizer Clause: The event organizer may modify rules relating to game logistics in order to suit the event. Examples include game length (game total), time limits (time caps), halftime length, number of timeouts, starting time point assessments, uniform requirements, and observer operations. Any such change must be established before competition starts.

Captain's Clause: For games not subject to the event organizer clause, a game may be played under any variation of the rules agreed upon by the captains of the teams involved. Otherwise, any rules variations are subject to approval by the event organizer.