Thanks for joining the thread, @Ta70.

I hope you're having a successful week so far. You can toggle between your created templates when you create an invoice by pushing the Customize button at the bottom of the screen. This will allow you to see all the different styles and custom templates you've made (see screenshot below).

You also want to keep in mind that once you use a template that's not set as default, you'll have to manually recreate the template if you're going to use it again. However, I'll let our Engineering team know about your idea to have more than one default template and switch between one or more. Your concept will then be considered for future QuickBooks updates.

I'm only a few clicks away if you have any other questions. Enjoy the rest of your week!