Creating a FTP user with access to a specific folder


I searched on the Internet but wasn’t able to find the correct answer. I want to be able to create a ftp user with a direct access to a specific folder. For instance I already tried this command :

adduser --home /home/MYUSER/torrents/rtorrent/download/MYSPECIFICFOLDER --no-create-home MYFRIEND

The command is working, the user is created successfully and I’m able to use the FTP however the default directory is ./ and not /home/MYUSER/torrents/rtorrent/download/MYSPECIFICFOLDER.

Any ideas guys ?

Thanks for the help