How to create QFN footprint in OrCAD PCB Editor 16.6

Hello,

I want to create a footprint for the QFN-16 package but OrCAD PCB Editor Package Symbol Wizard doesn't have one. Please guide me how to create one from scratch. 

Thank you very much.

Image may be NSFW.
Clik here to view. 

Image may be NSFW.
Clik here to view.