From the left navigation menu, tap Membership > Billing Manager.
Search for and tap on the account you would like to manage.
Search for and tap on the ledger item you wish to refund.
Tap + Create a Refund.
Choose whether you would like to process a full or partial refund. If partial, choose the applied charge and enter the refund amount.
Select if you would like to refund the electronic processing fee (if applicable), or skip electronic processing.
If you would like to issue a full refund credit, tap the checkbox to do so, and choose the proper "Charge Category" from the drop-down.
Tap Process Refund.