Creo Interactive Surface Design (Style) > Curves > Editing Curves > To Change a Planar Curve Position
  
To Change a Planar Curve Position
You can change the datum plane that a planar curve lies on, or you can offset a planar curve from its current position.
1. In the Model Tree, right-click the Style feature that contains the planar curve and choose Edit Definition. The Style tab opens.
2. Select a planar curve to edit.
3. Click Style > Curve Edit. The Curve Edit tab opens.
4. To select a new datum plane or a planar surface for the curve to lie on, click the References tab, click the Reference collector, and then select a datum plane or planar surface.
5. To offset a planar curve, type a new value in the Offset box, or hold down the ALT key while you drag the grid that shows the planar curve reference.
6. Click .