How to add product documents to the B2B Portal?

On the portal's product detail page, product documents that have been uploaded against the product will appear as hyperlinks.

Here is how to do that:

1. Find & edit a product
2. Click "Documents" from the left
3. Click "Add document"
4. In the "Document usage" drop down, choose "Website document"
   
5. Upload a document (PDF files)
6. After the next sync is finished, document links will appear on the product's details page like this: