Currently, Proton Calendar allows creating recurring events, but there is no way to define dates that should be automatically skipped by a recurring series (e.g., school holidays, vacations, public holidays).

Please add the option to link recurring events to an exclusion pattern, so that occurrences falling on specified dates are automatically hidden or skipped — for example by selecting another calendar that contains holiday events, or by manually entering exclusion dates for a series.

This would make it much easier to manage regular appointments (weekly lessons, courses, meetings) throughout the year without having to open and manually delete every single occurrence that falls during the holidays.

As an additional benefit, this would also create a calmer, more relaxing view of the calendar: during holidays, the days are psychologically "empty" and free of obligations — and the calendar view should reflect that, instead of showing regular appointments that are not actually taking place.

Ideally, editing or deleting the entire series should remain untouched by these exclusions, and it should be possible to view and modify the list of excluded dates later.

Thank you for considering this feature!