Templates make your life easier. Imagine all the documents you need, just the way you need them.
You can have invoices and, for example, the column indicating the tax does not appear and in others it does, create documents in other languages and much more. You can generate as many templates for your documents as you want.
From your profile go to Settings > My company > My templates > Edit and in the section Select the data you want to show in your documents check the information you want to appear and uncheck the one you don't.