How to add other passes (like AO) to the preview window?

[dtox_ftw]

Sorry if this is a silly question. I can't seem to find the menu item and googling is a lot of tutorials on AO.

I'd like to add passes to the preview window (like AO) and not sure how. All I have is 'Main' and 'DeMain.' I remember there being a noise option as well but lost it.

Any help is appreciated. thx

[jayroth2020]

In Render Settings > Octane Render > Render Passes tab, scroll down to the Info passes group and enable "AO."