Specify the "X" coordinate that represents the number of pixels the pane area should be from the left side of the frame area. You can also click and drag the left side of the pane and this coordinate will update accordingly. Changing this property affects all of the dialogs contained in this "frame" of dialogs.
TIP: | You can use this property, along with the Y property, to easily change the pane area's location in all of the dialogs in this "frame" group to the same location. Click and drag the pane area of one dialog to where it should be located, then copy its X and Y property values to all of the other dialogs in this "frame" group. |