deleteCalendarEvent

Is this possible?

When I've created an event in Apple's Calendar.app, how can I later edit or delete that event? Data can very possibly need to change, e.g. due to error or perhaps for other reasons an event created in Calendar.app needs to be 'moved' or even deleted. How can this be done, apart from switching to Calendar.app and manually making the adjustment, which to my mind rather defeats, or at least minimises the usefulness of being able to directly create events in the first place?

Surely Ninox have thought of this. There must be a way to edit or delete previously created events?