To make changes. Click the "edit" button, Click the words "Google Calendar", click the "X". Then click on "Insert", click on "Calendar" then put "check marks" next to the calendars that you want displayed on the website, then click "Select". Now you have a page that contains your class calendar(s) that will update automatically when you put something on the calendar from inside your main Google Apps account. Your students will also be able to subscribe to your class calendars. Remember to delete this text before you finish.