Deleting an order in PrettyDamnQuick is easy, you can just hover over any order and click on the trash icon. They'll be moved to the Deleted orders screen, which is accessible from the side-menu.
Note: Orders deleted in PrettyDamnQuick aren't cancelled. To do so, be sure to cancel them in your eCommerce store.
That's it!
Need to restore a deleted order? Just follow this help article