Time slots that recur based on if/then conditions

I would love the option to make a recurring time slot happen only on days where other conditions are met. I work on an A/B alternating schedule, and have been getting away with just making time slots repeat every 2 days and deleting weekends, adjusting for days off, etc. manually. I do have a calendar that lists A or B for each working day and would LOVE it if I could set time slots based on that. i.e.; repeat this time slot on all days that calendar event "B" is present.