Enter Distance. Then specify a distance from the start point at which a IP point along the feature line is inserted.
Enter Increment. Specify distance between points, then click the feature line to automatically insert IP points separated by the specified distance. As this command inserts multiple points, the level for each point will be determined by the existing level of the feature line at each point.
Do one of the following:
Enter the level for the point.
Enter Surface to obtain the level from a surface in the drawing.
Note: You are not prompted for the level if the object you selected is a 3D polyline.