Where can I refund the ticket sales?
From the event attendance list
From the navigation menu on the left, go to Events > Events and click the Operations button on the right of the event where the sale is and select Participant List. Then go to the Ticket Sales section.
Click the Operations button to the right of the ticket you want to make refund and select Make Refund.
From the general attendance list
From the navigation menu on the left, go to Events > Ticket Sales. Then go to the Ticket Sales section above.
Click the Operations button to the right of the ticket you want to return and select Make Refund.
If you confirm from the checkbox that appears, the ticket will be refunded.