If you want a separate occlusion pass from Poser you can get it using the RenderPasses.py
that comes with Poser.
You can render separate ambient and occlusion passes.
They are being saved in the file format you've set as default for image export, usually .png

For even more control you should have a look at "Advanced Render Settings" by Semidieu at RDNA.

Martin

Yesterday's the past, tomorrow's the future, but today is a gift. That's why it's called the present.