To
edit geometry constraint channels with the Channel
Box
In
the scene, select the constrained object.
Set
the channels.
Click
the name of the channel you want to edit.
In
your scene, -click
and move the mouse to the left or right. By moving the mouse, you
interactively change the value of the selected channel. As you move
the mouse, note that pressing the key gives
you finer control, and pressing the key
gives you less control.