[orca-list] change the orca modifier key

[Josh Kennedy <jkenn337 gmail com>]

Hi
I cannot figure out how to change the orca modifier key the capslock key to the left windows or left start 
button key. All I see is the key binding then I arrow right to the key itself then arrow right to a checkbox 
that says modified. I don't see a change button or anything like that. I also don't see an add button either. 
Can someone explain the key bindings dialog to me?

Josh Kennedy
jkenn337 gmail com