To be able to delete a calendar event you must have the Manage calendar permission enabled and be the event organiser.
Go to People > Staff > Calendar and click on the event:
And click Delete Event in the bottom left-hand corner of the event window:
If you wish to Cancel, you can do so by clicking the button in the bottom right-hand corner.
To continue to delete , click Delete:
To delete a recurring event, you will need to go back to the first day of the event so it should look like this: Master Recurring Event
And not like this: Recurring Event
Click Delete Event:
Click Delete every following event:
