Imported calendar, meeting cancellation

Imported calendar, meeting cancellation

Hello

I tried going though the documentation but I was unable to find something.

In my mail account, I have a calendar. In this calendar, I added a number of events from an ical file. The events have attendees. I sync the calendar to my phone via ActiveSync.

How can I avoid sending out cancellations to the upto 20 people for each event if I delete an event?

The events are from a common football club calendar and attendees are people who have signed up for e.g. training. However, I am not the organizer - although the importer seems to automatically add me as such.