I would like to create an invoice template based on the purchase purpose
I need different fields and layout to buy for personal needs and different for companies (for example, provide the company's VAT ID)

I see that as a default you are using invoices for personal needs
I assume that I have to go to Setings / invoices and the content source set to custom, and then create a Joommla article with the invoice template using the available variables
Please confirm if this is the recommended way to solve this problem
Please send a sample joomla article that can be used as an invoice template so that I don't have to start from scratch.