To delete an event:
From any calendar view, tap on the event that you wish to delete.
A popup for the event appears, displaying basic information about the event.
Deleting a Recurring Event: If the event you are deleting is a recurring event, a Confirm Delete Event window appears. Since a recurring event is set to repeat, you will be asked if you wish to delete this instance of the event or delete all instance of the event. If you wish to delete only the current instance, tap Delete this one button. If you wish to delete all instances, tap Delete All button.
Deleting Appointments: If the event you are deleting is an appointment, you will be asked for a confirmation before deleting the event. Subsequently, the appointment is deleted from the user's calendar.
Deleting Meetings: Depending on the your role in the deleted meeting, the following actions are performed. If you are the organizer, a notification is sent to all participants that the event has been cancelled. For meetings, where you are an invitee, you will be informed that the meeting will be removed from your calendar and the organizer will be informed that you have declined this meeting.