With the "Downloads" custom fields you store up to three downloads – each with a file, title and description – that are displayed under the description on the product page as download links via the ThemeWare® "Product downloads" extension.
Custom fields
You can find the "Downloads" custom fields in the respective product:
Tab "Specifications" ⇒ Block "Custom fields" ⇒ Tab (Set) "Downloads (... Pro)"
The individual custom fields: