xfce4 Shut Down/Reboot

[Sha'ul]

In visudo I added shaul ALL=NOPASSWD: 
/usr/local/libexec/xfsm-shutdown-helper as it says to do in 
/pkg-readmes/xfce4-session-4.8.0p2 but Shut Down is still faded out or 
disabled. If I run a sudo command in Terminal then I can click on Shut 
Down or Restart from the Quit menu.

What am I missing? Which configuration have I missed?