Go to the CALENDAR TAB and click on any appointment within a recurring series it will open that appointment and prompt you with four options:
CLOSE | EDIT FUTURE APPOINTMENTS | EDIT | DELETE
To edit only the an individual appointment in the series, use the EDIT button. To edit the whole series, use EDIT FUTURE APPOINTMENTS.
The deletion options appear when using the DELETE button. You can delete an individual appointment in the series, the whole series, or only certain appointments in the series (custom delete).