The first step in allowing customers to make offline payments is to create a product. The "Pay Invoice" product is an ordinary product where the "product type" has been configured to be "Pay bill":
Step 1: Create a new product and configure the product name and permalink. In the example below, we have configured the product name as "Pay Invoice" and the permalink as "pay-invoice":
Step 2: Under the product data, configure the product type to be "Pay Bill"