Refund many orders at once

1. Open the event's orders list (pick the date if needed).
2. Tick the orders, or click select all.
3. Click Process Refund(s), pick a reason and click Process Refund.

Each order is refunded in full, its tickets are voided, seats go back on sale and the buyer is emailed. Cash box office orders and free orders aren't refunded online; their tickets are just voided.