Adding a guest FTP user

is there a possibility to add a guest ftp user who can only download\view files that I’ve downloaded and are in rtorrent folder? Apologies if this is a noob question, but I would like for some friends to have access to files but don’t want to give away my master username and password.

i use this command as sudo: adduser --no-create-home --home /home/YOU/torrents/deluge/ USER

also might want to block them from ssh by editing /etc/ssh/sshd_config adding “DenyUsers USER” at the end

this allows that username to ftp in and only see your deluge folder, switch it to rtorrent if thats what you use, they will also not be able to delete any of your files.