Different schedules for different weeks?

I am in law enforcement with a rotating schedule every week with random pop up appointments. One week I will work Monday, Tuesday, Friday, Saturday, and Sunday (a long week) then the next week I only work Wednesday and Thursday (a short week). I use Calendly to set appointments for something on my days off, but I don’t know how to set schedules for different weeks. I know I can set a specific availability calendar for a meeting type and I can switch a meeting type between both of those calendars, but the problem is that with Calendly allowing a rolling schedule of X number of days, people could set an appointment for the next week where I have a different schedule. The option to set a date range doesn’t necessarily solve the problem, unless I set a date rank every 2 weeks.