1.As noted above, under the Accounting tab, if you select a Payment Type that incurs an automatic surcharge, that Surcharge Detail Item will be automatically added to the invoice.
2.If a Payment Type Surcharge is added to a Credit Invoice, the amount will appear in parentheses, indicating that it is a credited amount.
3.You can edit a Surcharge item as a typical detail item. Review View/Edit Invoice Detail Item.