Anything about defining custom materials in AdvantEdge?

First of all I woul like to present myself.

I am Ana Munteanu from Romania, Galati, Mechanical engineering, and my doctoral these is on machining polymeric materials. I have an soft programme (FEM) ThirdWave system advantEdge version five and I would like to simulate turning of polymeric materials. The soft is for mettalic materials, but the programme have capabilities of defining custom material.

My problem is: the soft ask me some coefficients of my polymeric materials, and I have no idee how to find them.