@georgehrke
Back in the old calendar app there was an open pull request made by you that removed the alarm from events in read-only sharedy calendars.
You postponed this PR due the calendar on OC9 uses another caldav implementation.

Is something like that already possible in OC9 or is it planned?

Old PR is: owncloud-archive/calendar#668
Old issue: https://github.com/owncloudarchive/calendar/issues/547