You can delete a standalone appointment, a series of appointments, or an appointment within a series of appointments.
Perform the following steps:
Double-click on the appointment in the schedule pane, to open the Appointment window.
Choose File -> Delete.
If a confirmation alert appears, click Yes.
Perform the following steps:
Double-click on any appointment in the series, in the schedule pane, to open the Appointment window.
Choose File -> Delete.
If a confirmation alert appears, click Yes.
Perform the following steps:
Choose View -> Current View -> Day View.
Right-click on the appointment that you want to delete, in the schedule pane.
Choose Delete this Occurrence from the popup menu.