Center lower panel?

I asked this on the Xfce Users list and received a suggestion from a kind user there to a solution that 'almost works'. But I will ask again because what I want to do I can actually see in the Current Xfce here in Fedora. quote me. I have created a 2nd panel that is 'Launcher count sized to fit' that contains 6 'launchers' that I have placed at the bottom of the screen. But I can not seem to get it to 'center justify'. The Help says that placing it on the right, left, or bottom should automatically center it. What am I doing incorrectly and where can I find the necessary information to correct this? -- David