Simple, a lot of the women do the man's part. Many women can dance both parts, but some women only know the man's part. In any case, it's not considered a problem here. It's usual to change partners for every tip, and even married couples don't usually dance together more than once or twice per dance. Another difference is the way beginner classes are run.
Most clubs hold a beginners class once a year and it is held on the normal club night.
The majority of the clubs here dances at the Mainstream level. In general, round dancing is also part of the program for most square dance clubs. Beginners are taught round dancing during beginners class and Phase II-III level dances are included in the program at most dances and festivals. Most callers and cuers are members of one club and very few of them get paid for their services. Most of the clubs are officer-run, and the callers and cuers will often be officers as well.