Sequences: overlap detection + select alternative immediately for recurring booking

When I want to book a client as a series/recurring (e.g., every Tuesday at 13:00), I want FITsociety to immediately detect conflicts (existing bookings, blocks, capacity/location/coach) and display a clear warning right away. In that notification, I want to be able to immediately choose an alternative: the next available time(s) on the same day, a fixed shift (for noting: 13:00 → 14:00 for the entire series), or another date. Including an overview of which specific occurrences conflict and options per conflict: skip occurrence, reschedule, or adjust the entire series.