If I add a 'print' statement to the end of extern/worldPayNotify.php, then after processing of the payment, the user will be on an RBS worldpay URL and will see whatever text is printed. If I don't include a print statement, then the user is shown a default WorldPay result page that gives transaction number information.

Here are the steps to make a custom refund entry in Zenoti: Open Guest Profile and go to Appointments tab. Click Refund icon. Refund screen appears. Select the items to refund and enter the refund amount against each item. Click Proceed to Refund. Payment methods tab in the Refund screen appears. Under Amounts to refund section, enter refund.