At the national level, a Tournament Etiquette document has been produced, and generally this covers the conduct of players in matters not directly relating to the rules of play eg distracting the opponent, kibbitzing.
ASPA (NSW) also maintains a Dispute Register. This contains details of situations that have occurred during a past tournament, along with the ruling that was given at that time. In most cases, the situation is too complex or unlikely to warrant a rule of any kind.