If your event supports schedule synchronization with an online planner, you can select the Schedule tab. A login dialog appears. Enter the same credentials you used to build your schedule online. Once you are logged in, your online schedule downloads. (You may have to refresh the page by tabbing out of Schedule and coming back to it.)
If you do not see the login dialog appear, select the More tab, then Settings (may be relabeled to Login by the event organizer for your specific event). Enter your credentials. You should now be able to download your schedule.