If you can't change an event or calendar, check the following:
| If it's a calendar that you've subscribed to (one with a curved arrow beside it), you can change the calendar name but you can't change its events or To Do items. |
| If you were invited to an event, you can change only your status for the event, the calendar where the event appears, and the event alarm. |
| You cannot change or delete birthday events on the Birthdays calendar that is created when "Show Birthdays calendar" is selected in iCal preferences. To change the birthdays that appear, open Address Book (in your Applications folder) and make your changes there. For more information, in Address Book choose Help > Address Book Help. |
| If you can't change a single event's time zone or the iCal time zone, time zone support may be turned off. Choose iCal > Preferences, click the Advanced button, and then make sure the "Turn on time zone support" checkbox is selected. |
| If you want to change events on a calendar that you published to the Internet after you've deleted the calendar from your Calendars list, you need to recreate the calendar with all its events, give it the same name as the published calendar, then publish the new calendar. The new calendar will replace the previously published one. |
| If you can't change an event for which you are the organizer, or can't change the attendee settings on an event you've been invited to, make sure all your email addresses are listed on your Address Book card (the card marked "me"). For more information about invitations and your email address, click "Tell me more." |
|