Hi George! Thank you for sharing a query with us. As you are looking for customizing invoice software, in such a scenario, I would suggest to try a 30days free trial version of BTHAWK. Its a complete invoice customize software app. I am using BTHAWK for the last 10 months for generating customize invoices and also it helps me in doing every task related to accounting including, preparation of the financial statement and filing GST or other tax return online. BTHAWK is a cloud-based software app that makes the users to access their provided data from anywhere at any time.