You must be a member of the Cornell community with a valid netid to create a new event for these pages.
Go to: http://events.cornell.edu/ and click the login link at the top. Use your netid and password to login.
In the right hand column, you'll see a button to "Submit an Event". Follow the directions on that page.
Once you have added your event, email Linda Poppleton (firstname.lastname@example.org) so that the event can be properly tagged to show up on these pages.