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.
Edit Definition. The Style tab opens.2. Select a planar curve to edit.
3. Click > 
Curve Edit. The Curve Edit tab opens.
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, on the References tab, 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. Optionally, click 
to export the parameter value to edit outside of Style.
to export the parameter value to edit outside of Style.6. Click 
OK.
OK.