Hi mallockk,
Welcome to the Community. QuickBooks is a powerful accounting program that's designed to help you streamline your work. I'll be happy to share more info so you're on the right track.
In order to create multiple templates for an invoice, click on the Gear icon > Custom Form Styles > from here you can create a New template or edit an existing one. For more info about this process, I recommend checking out the following article that shows you: How to customize an invoice.
You're welcome to ask other questions as you browse through the article. I'll be a message away.