There may be multiple sessions that are beginning at the same time, and you might want to order these sessions in a certain sequence. To do so, you would need to reorder the sessions.
At the Content tab, select 'Agenda' on the event app menu and click 'Reorder'.
There will be a '＝' icon next to sessions that can be reordered.
Click on the '＝' icon and drag it to the desired position.
Click 'Apply' to apply the changes.
Clicking 'Reset' will reset the Session order.
Note: The 'Apply' and 'Reset' button will only appear after changes to the Session order has been made.