Downloadable Product issue

Why does the downloadable product show up in the product’s description, under a “file” tab? I have the file setting set on immediate because it generated an email with the download link vs. the payment processed/complete option didn’t. Additionally I don’t want to have to mark anything completed. I want it to be automated. I sue only paypal.

I noticed not all of the products display the file tab to download the file in the item’s description when using “immediate” for delivery option. Which makes it all the more confusing. What do I choose to sell downloadable product without having to verify anything?