From the FAQs =>
In addition to the SuperPasses awarded to your club at the start of an
Event, two additional SuperPasses will (be) awarded to your club at the start
of each Clash you participate in.
This fits to my experience: The number of passes acc. to CC level is preset for the whole event, 48 hours, and you get 2 extra per Clash.
For the OP, it should be 8 in the beginning and diminish by use, if only the owner has given enough members the allowance by member class, see owner's tools.
But, it really doesn't matter. You won't win anything of any value with the superpasses. You'd have to plan and act professionally, that is get 200 members to play 10 Clashes each with free passes, or spend a fortune in extra passes.
And, even if your CC reaches the top with about 100,000 points, you just "win" the chance to have an internal battle for ONE mediocre putter.
To me, it's not worth the struggle! The only way to play the Clashes is for fun & free. Enjoy the common experience with your CC mates without looking for glory!