It's a third tier Cup, meaning that only teams eliminated from secondary cups are admitted. Teams that are eliminated in round one of the Emerald Challenger Cup (week 2) and in round one of the Ruby Challenger Cup (week 3) will gain a place in it.
Prize money for National and Divisional Cups: -
Number of teams (max): 4 096
Number of rounds (max): 13
Final on week: 15 (or before)