When you've registered for an event with multiple sessions, sometimes you want to go in and watch a specific session.
When you enter the event, right underneath the event title at the upper left you'll see where it says SCHEDULE.
Select (more...) to reveal all of the sessions within that event.
From here you'll see a dropdown menu of all the sessions available for you to go into.
Just select the session you'd like to watch and you'll be taken there.