Panel Origin

When a panel is created the Origin is placed at the first vertex by default and the X and Y co-ordinates of all other vertices in the panel relate to this position.

From the main menu toolbar select Position > Panel Origin and you are prompted to Pick near vertex for new origin which allows you to use a different vertex in the PLOO as the panel origin.

If the origin is redefined in this way, the coordinates of all vertices owned by the current panel loop are recalculated relative to the new origin such that their positions in the design model remain unchanged.