Click on the event title that's shown in the Day, Week, or Month view.
Or
Enter the event title in the Search text box located on the Current Calendar page and press enter.
Make changes to the event by typing over the existing information or selecting new options as applicable.
Click the Update button to save the changes.
Note: To change the time zone setting, from Menu select Options. Then click on Viewing Preferences and select the appropriate time zone from the list box. Click Save to update your changes.