You can enter the Bills module from the icon on desktop:

In the bill module you can view all bills and create refunds

To create a refund, press on button "Make a refund":

In the Refund window select a service, and then click "Make refund" and then confirm.

The successful refund will be shown in the refund tab:

To return money, select the dollar icon:

Enter the required info into the money-back form and press "money-back"

Successful money-back will be shown in the money-back tab:

You can search for bills by using filters:

You are able to search by bill #, guest or company name, bill status and bill creation date range. Press "apply" to view results: