It’s hard to describe the studio setup other than, the current setup is what we have to work with. We have neither the resources or the room to bring in any more lights, or move the subject. I know the conventional wisdom is to always adjust issues at the time instead of after the fact, but in this case, it’s inevitable.
However, I should mention the foreground subject does not move. They are always in a stationary position for the duration of the video.
I have seen AE plug ins that let you designate an area you wish to focus on (IE: using a simple, circular mask type cursor) and it generates the desired effect in and around this area.
Are you saying there is no such method that will allow to generate the key-light shadow?