Intuit Payment Network

-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.4.4
-- PHP version -- : 5.6.13
-- Browser(s) name and version -- : Firefox 41.0.1

As a brand new user of HikaShop, I have a couple basic questions about Payment Options.

I have a client who wants to use Intuit Payment Network for sales on his website, along with PayPal & Credit Cards. This (IPN) is a bank-to-bank transaction that costs only 50 cents per transaction. I have searched the forum, sifted through the documentation and looked over the FAQ, but have not yet found anyone else who is wanting to use IPN. (This is NOT Instant Payment Notifications, but Intuit Payment Network.)

Intuit's website has a place where an IPN Button can be created for the website, but it's HTML code. Does that mean it cannot be integrated with HikaShop? And does that mean if I configure the button on his website any purchases made using IPN won't be integrated with all other HikaShop results?

Thank you for any help that might be out there today.