Regulations
Each club needs a system of rules that govern how the game is played in the club. These are the club's Tournament Regulations. Like the Laws, they set out correct procedures and what to do if there is an irregularity.
It is important to note that no regulation may conflict with the Laws of Bridge. For example, the Laws specifically allow the use of psychic bids, so no club regulation can prohibit them.
2017 Laws of Duplicate Bridge, Commentary on the Laws & Laws Committee Minutes
At a minimum, a club needs the following: