Multiple exposure effect with stack modes?

[lloydpdx7]

I've done some searching but can't find guidance for my particular interest. Perhaps I'm using incorrect terms.

I'm planning an environmental portait of a client, in which she appears in several locations in a single environment. (Happens to be indoors.) Would you call this something like a composite multiple exposure? I'll of course be locked down on a tripod, and will shoot a "plate" of the scene without her, and then will place her in 4-6 different areas of the scene. Once in Photoshop, are stack modes more effective or efficient than blend modes? Or vice versa? Or perhaps both? I'm not planning on changing lighting across the scene, nor do I want any "ghosting" effects- pretty straightforward, visually anyway. I'll experiment of course but curious about useful starting points, especially if they change my capture strategy. Thanks in advance.

[c.pfaffenbichler]

Can you post (lores-versions of) some of the images? 

[JohanElzenga]

I do not think you can use stack modes for this. You'll have to use masks.

[Trevor.Dennis]

Just a straight ford composite.  The selections are super easy if you are using the current version of Photoshop, although that will obviously depend on how busy the background is behind the subject in each location.  Where it might get complicated is if the subject in one location is shading the subject in another location, and or thowing a shadow that would fall on the subject.  I might be inclinded to get some help of an additional person of roughly the same size and shape, and place them accordingly.  It's things like shading and shadows that make a scene look wrong.