Railworks America

Hi I heard there is an easier way too add terrain to a route, Okay you know when you come a end of Tracks. Then the ground drops off then you have to make the terrain level with. The Tracks that end the snap tool so I heard you could use the Dem/SRTM. Too make it level faster then using the snap tool where you. Have a round yellow circle and a big white square. I would like too know what do I need to download & install so I can make this easier for me Thank You.

I'm gonna need screenshots.