PMSS:Allowing user to change rTorrent settings
From Pulsed Media Wiki
This is actually a really easy task. To do it for single user:
cd /home/USERNAME chown USERNAME.USERNAME .rtorrent.rc
To give this ability to all users being created, edit /scripts/addUser.php and remove from bottom the chown root.root .rtorrent.rc line or comment it out, remember to redo it after updates.