Is it possible to limit uploads to a specific folder?

[Robert Archer]

Hey everybody!

I have a site using filer and django-cms that supports multiple groups of content.  I would like a way to set the default folder for a group to a specific, automatically created folder so that users can add sub-folders and files that are dropped onto the upload area are uploaded to that group folder.

Because groups are divided into "projects" and I already user permissions at that level, I can't do this with permissions :(

Is there a mechanism like this?  Or am I looking at forking filer to make my changes to the package itself?

Thanks!