About Creating a Profile by Best Fit
Create a profile that follows the most logical path through a series of surface profiles, feature lines, COGO points, or AutoCAD 3D polylines, points, or blocks.
To Create and Modify Dynamic Offset Profiles
You can create dynamic offset profiles using the same command you use to create offset alignments. A single default cross slope is specified when you create the offset profiles. After the offset profiles are created, you can assign different cross slope regions to the profiles by modifying the profile properties.