Teams in this league are entered by ballot at the beginning of the season into one of two divisions which are of equal status. The winners of each division play off in a final at the end of the season.
Mixed teams play in four rinks of triples according to standard rules.
Captains can agree to play in one of three formats:
1. two practice ends with 2 woods per player and then all shots count
2. maximum of one shot to count on the first two ends
3. all shots to count on all ends from the beginning of the match