Creo Interactive Surface Design (Style) > Datum Planes > To Edit an Internal Datum Plane
  
To Edit an Internal Datum Plane
1. Perform one of these actions:
Right-click the internal datum plane in the graphics window or Style Tree and choose Edit Definition.
Double-click the internal datum plane in the graphics window.
The Datum Plane dialog box opens.
2. Edit the Placement, Display, and Properties of the internal datum plane as required.
3. Click OK.