How do I change a reference plane?

Geometry Elements - Reference Planes

To change a reference plane, do the following:

1. Select Circuit => Ref. Planes/Cal. Length from the project editor main menu.

2. In the Reference Planes/Calibration Lengths dialog box which appears, click on the box wall whose reference plane you wish to change. The list of box walls appears at the top of the dialog box and shows the type and length of reference plane for that box wall.

3. Select the type and length to which you wish to change the reference plane.

4. Click on the OK button to close the dialog box and apply the changes.