That can't be done. There's nothing in the way the game is made that planned for kicking people out, and it's not a behavior that can be added with the modkit. You also can't have anything that lets you add one specific person to a specific task.

The only thing that could be done would be adding a job with high risk of death, but you'd have no control over who gets assigned to it when you add a worker there, and you'd have to be fast to disable it before it kills more than one person. All in all, not really interesting.

That actually sounds like a rather interesting idea. I mean, why take everyone when you can weed out the ones you don't. I get that there's probably not a way inherently designed to allow this to happen but I also see why this would be beneficial.

It would be nice yes, but it can't be done with the modkit. You'd need to rewrite parts of the game. Might as well make a new game instead!