Financial or Super Admins can issue a manual refund to counteract a manual payment in Regpack.
In user management, click the center number by the user which represents their payments. Click process payment --> list manual payment --> manual refund --> enter the amount --> issue manual refund.
Please note this will mark the user's payment refunded, but it will not give their money back. Manual refunds are intended to represent funds exchanged outside of Regpack. There is a different process to issue refunds for electronic (credit card/e-check) payments