The "My Agenda" feature allows you (or your event organizer) to personalize a schedule from the full schedule listed in the main agenda.
To add a session to My Agenda, simply tap 'Add to My Agenda' near the bottom of any session’s information page. Alternatively, you can tap the calendar icon to the right of the session name from the main agenda screen.
To remove a session from My Agenda, view the event in the main agenda and tap the calendar icon to the right of the session.
Note: if your event organizer pre-assigned you to sessions you will be unable to add or remove sessions to your personal agenda.