Access & Delegation Calendar

HelloI have a problem with the Access & Delegation for the calendar.

A secretary got from her boss access rights on his calendar (Read, Create, Edit and Delete). The first 3 points are working fine for the secretary, but to delete calendar entries do not work.

Can someone explain this to me, why she don’t can delete calender entries out of the calendar of her boss?

The template is 8.0.2. and the client version 8.0.2 FP5.

Subject: What type of calendar entries?

Is the delegate unable to delete any calendar entry, or only certain calendar entries? For example, they can delete meetings, but not appointments.

Subject: All kind of Calendar Entries

She can’t delete no kind of entries from the Calendar of her boss…