I have a folder on a server where a client of mine has a bunch of folders that they upload images and what not for a site, I do a symbolic link to those folders to the root of the website. This way I can give them ftp access to upload whatever they need without having access to the root level of the website.
I have another folder that I can't setup as a symbolic link to their folder, which has images they need to upload to. I know that if I create a symbolic link the other way around where the sym link is in their folder, they can't access it through FTP.
There has to be a way without creating two separate FTP accounts and give a user the ability to upload to a different directory that is outside of their home directory. I see that it is ftp specific and that there are some settings that can be changed but I haven't seen any clear cut answers for the best way to handle this.