I'll gladly guide you on how to change the invoice template in QuickBooks Desktop, @Karl 1.
To modify the default template, let's untick the Print Later box. To do this, record a new invoice and disable the option. This state becomes the default until you mark the box again while creating a new transaction.
Let me show you how:
Moreover, I've added an article you can review to help you manage and customize form templates in QuickBooks Desktop: Use, duplicate and import templates.
Keep in touch if you have other questions about handling your invoice or other sales transactions in QuickBooks. I'll be happy to help you again. Stay safe and have a pleasant day!