VAT for amazon seller Do I have to create an invoice for each sale?

Hallo again,
I am trying to set up Zapier to connect my amazon account and quickfile. I am unsure about what action I want Quickfile to take, or what is the best for it to take, when I get an amazon order. Either Create Bank Entry or Create Invoice. I don’t need it to do anything in connection with my bank, so do I just want to Create Invoice? And then how do I mark that the invoice is paid? Sorry for bothering you, it’s just no matter how much I read I am having difficulty understanding Quickfile!
Martina