Is it possible to make a user with only file upload & download files & folders but not making any new folders?
The permission option used for this is called "User cannot move, rename delete, etc..". You can still allow uploads and downloads.
I have set this as a feature request, perhaps other users might be interested in such option.
At this time we do not see a good reason for it. If the only expected action from a user is to upload files, one would better create a "file request" instead.
Customer support service by UserEcho