I am investigating the compressive strength on FEA through a Static study on Polylactic Acid (PLA), the material used on 3D printers. I acknowledge the fact that the material is Linear Elastic Orthotropic and because of this, I do not know how to input the corresponding properties to the their proper coordinate.

Please don't give the actual answers (I'd like to learn how to attain it.) Guidance and step by step is much appreciated!