In order to use this feature, you need to integrate your PayPal account into Urban Seller.
Check out HOW.
You can now Issue a partial/full refund without any return request or case being opened from customer's part !
Check out your Orders section -> Find the order you need and select it
Click at the PayPal Refund button on the top right hand side of the screen.
A pop up window will appear where you have to select if you are issuing full or partial refund and the amount you are sending to the customer back.