Press Ctrl + Tab to return to floor plan view. You should still be on floor 1.
Click the Fill Window button to fill your screen with the terrain perimeter.
Turn off the display of the layer, "Terrain, Primary Contours". If you cannot remember how to do this, see "Adding a Retaining Wall".
Select Terrain> Roads and Sidewalks> Driveway
then click and drag to draw driveway sections. Driveway sections drawn using the Driveway
tool will merge when drawn end to end.
Select the driveway and click the Convert to Spline
edit button.