After purchasing & downloading order page from HostBill Licenses Client Area

Extract downloaded archive contents in main HostBill directory on your server
In HostBill, proceed to Settings → Products & Services
Select existing order page, or create new one
Click on Edit this Order Page
Click on uploaded order page to activate/select it
This order page offers some customization you can do from admin panel.
Areas available to modify:
To modify editable areas, click on Customize button and enter your custom texts:
Save changes to save order page settings.

You can now edit your products under this order page. Following product description setup:

Will result in following order page layout:

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