I have a website operating using the joomla cms along with remository component. I am looking to expand the site and was thinking of doing so by basically replicating the system I have now into different subdomains, one for each group of members. This would allow for a different folders, membership restrictions etc. to be specific to the 'section' that the user signed up for.
The problem I have is integrating some aspects of these seperate subdomain sites. The main thing I would want is the ability for users of any section to be able to download (but not upload) from any of the sections. i.e every file uploaded will be available to every user no matter what section they are part of, but users are only allowed to upload files to their section.
Let me know how complicated this may be and if it can be done relativly cheaply.