Terrain model tool in XM version, where is it in AECOsim version?

I remember back in XM version , Terrain modeling tool are quite handy , I could just trace the contour line and make a terrain out of it  but it seems in Select 3 version, the terrain modeling tool doesn't exist anymore !!

Terrain model tool in XM version, where is it in AECOsim version?

Thomas T