To manage a payment, for example to capture or refund it, you need to:
The actions available for payments are the following:
To cancel a payment you can select a specific date or proceed with an immediate cancellation.
You can partially capture a payment, specifying the amount and the date. You can check the box "Total amount" in case of a full capture and/or "Instant capture" to proceed immediately with the desired action.
Just like with the capture, the refund can be total or partial, immediate or deferred.