Set it on the link
Turn on Recurring event, say how often and the most sessions anyone can book. Up to 32, every 1 to 20 weeks, months or years.
Felix picks one time
He chooses Tuesday at 9:00. The booker lists every date in the series before he confirms, and he can take fewer than Ida's twelve.
Every date on one confirmation
Felix sees the series and its first dates the moment he books, and one invite covers all of it.
Twelve Tuesdays, both calendars
Each session lands in Felix's calendar and Ida's, beside what they already had that week.
