I have imported an .obj file exported from my 3D software with the image of a face on it. Into Poser 11.

In my 3D software the plane is transparent and only the face shows.  

How can I make this happen in Poser 11?

the plane obj is white which I do not want. I want only the Face to show.

Thank you.      

MacBook Pro OSX El Capitan Ver 10.11.6