Resellers can define the Preferences associated with billing.
Used to calculate the due date that is printed on the invoice. For example, 30 days would calculate a due date 30 days from the date the invoice is generated. If nothing is defined here, it will default to 30.
Show Pay Online Link
Enabling this option will show a link to pay the invoice online at the bottom of the invoice. This option requires the merchant to be configured with a hosted payment page to accept the payment (below).
Hosted Page Merchant
The drop down will contain merchants in the current reseller scope with Hosted Pages enabled. Select the one that should be used for the Pay Online link above.