Instances with an instructor double-booking show an "Instructor Conflict" badge on the card
When editing the instance, the instructor's schedule column appears alongside the bay/court column
The lesson time is highlighted yellow on the instructor column when there's an overlap with an existing lesson, and green when there's no overlap — instructor conflicts surface as warnings but do not block the series from being saved
When editing the instance, the instructor's schedule column appears alongside the bay/court column
The lesson time is highlighted yellow on the instructor column when there's an overlap with an existing lesson, and green when there's no overlap — instructor conflicts surface as warnings but do not block the series from being saved