Convert PDF to a Billings App (MAC) invoice template

I would like 2 PDF I've designed turned into a Billings invoice template. Billings is an invoicing program for Mac OSX, it comes with templates, but also has a tool to create your own. I'd like a tech savvy person to put these PDF into Billings so it's a fully functioning Billings invoice template with all the normal features. It should be able to expand and adapt depending on the Billings project. for more info about billings app: [login to view URL]