Othotropic material definition in Geostar

In a thermal model in Geostar I am defining orthotropic materialproperties kx, ky, kz.  I am assuming that with the therematerial properties defined in the MPROP menu the orthotropic properties are associate with that element group.  Also,in the real constants menu by defining the x,y,z coordinates for 3points the element orientations are defined that corresponds to theorthotropic properties defined for that particular elementgroup.

Is this the proper way to define orthotropic and anisotropicproperties in Geostar?

Mike