At the Content tab, select 'Sponsors' on the event app menu and click 'Reorder'.
At the selected Sponsor, click the '＝' icon and drag the sponsor to the desired location.
Click 'Apply' to apply the changes.
Clicking 'Reset' will reset the Sponsor order.
Note: The 'Apply' and 'Reset' button will only appear after changes to the Sponsor order has been made.