Project I was about to start has been delayed two weeks which in and of itself is not an issue however I have 25 all-day events in my macOS Calendar for this project and now need to adjust the start dates to reflect the new start dates. The events are four month-long tasks and then each is broken down into five week-long phases that run consecutively. (Poor man’s project planning effectively.) When this happened with a similar project last year I manually adjusted the dates but am hoping to avoid such a laborious and error-prone task with this one.
Is there a quick way to changes these dates en masse or am I stuck with changing them one-by-one?