You can change your appointment status at a later point of time. Depending on the server configuration, you can only edit an appointment in your private calendars if you are a participant of the appointment. In recurring appointments you can change the confirmation for a single occurrence or for the complete series.
How to change your appointment status:
Depending on the view selected, use one of the following methods:
Click on an appointment in a calendar view. In the pop-up, click on
.Select an appointment in the list view. Click on
in the toolbar.
When having selected a recurring appointment, set whether the changes should be applied to the single occurrence or for the complete series.
Enter a comment in the Change confirmation status window. Click on one of the buttons , or .