Bulk update of documents for downloading

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.3.0
-- Joomla version -- : 3.2.3
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

I'd like to upload a large number of documents describing products which users can download. Where in Hikashop do I upload these document files to? .

Many thanks

Thank you for this information. This will be very helpful.