1. Log into your event, and click the 'Schedule' drop-down at the top centre of the page (ensure the Editing Mode is on)
2. Click the 'Edit' button, enter your time zone, set the day and start time, and hit the save button. If your event runs for multiple days, hit the 'save and add one more date' button, then 'Save and next when done adding the days.'
Note that once you add your event's date and time, it displays the same on the landing page.
The event's end time is determined by the length of all the presentations scheduled on that day.