Each club is different our rules are
Top challenger
3 days notice of first challenge then at least a week between first and last and at least one must be a weekend
If no dates agreed committee decides and still no agreement either both out or a flip of a coin (usually both out)
Seems to work although every time im the challenger i put the challenges in the day after the last round ends, im still waiting for a challenge and it ends on the 28th,
