It has come to that time of year when various Cup Competitions appear on the fixture list and referee are expected to know the minutia of each and every competition.
A few years ago I produced a document intended to help referees find the necessary information. This was updated last year so I hope that it is still current. The document is catchily entitled "EMRURS 2021 Sept - Competition Rules and Regulations Notes" and may be found within the EMRURS Doc section of this website.