WebPlus X5: Uploading Excel Spreadsheets

Hi All,

i have the website for my fathers company all sorted and completed except now he wants to be able to upload each companies individual price sheet to their own section of the website.

I have it all set up so that each user has a login and access to their page only through the use of smart objects. My fathers login account has access to everyones pages as he is the owner of the company but he wants to be able to log on to his account on the website and upload an excel sheet to each customers page when ever their price list changes, some peoples change weekly other monthly and he want to be able to do it without using serif webplus and uploading the website each time.

Is there any way i can work it so that he can upload files to the pages and the customer can just download the document when they need it.
I am using Serif WebPlus X5 and am also using Serif as my host.

Thankyou
Stephen