To be able to delete a calendar event you must have the Manage calendar permission enabled and be the event organiser.
You then need to click on the event:
And click delete in the far left hand corner:
If you wish to Cancel, you can do so by clicking the button in the far 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:
Click Delete every following event:
