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.
Mobile (iOS app)
After you've entered your event through the app, the screen will default to the live feed along with the chat.
Once you are on this screen, you will want to swipe halfway down on the screen (starting from the top of the live feed.) You should now see a schedule bar that shows the time and name of the session you are in.
Click into that schedule bar and you will be prompted to a screen that shows the full schedule for the event. It shows you which session is currently active along with the times for the upcoming sessions.