Here’s the setting I’m talking about:

I’m wondering if I can change the Exposé behavior on the fly, or even during initialization in my code? I have some users that don’t wish to see my app firmly planted on the desktop (Stationary Behavior), so I wanted to add an option to allow it to roam freely during Exposé. However, I haven’t found a property to change this on my window. Is it possible?
I think you can use this NSWindow method:
List of NSWindowCollectionBehavior options.