There are many reasons for utilizing such a document. Is the final document going to be about implementing a decision already having been reached or is it about analysis and recommendations for a newly proposed activity. As noted above, a finished document may be for internal or external purposes. Externally they are often used to solicit funding for a start_up or joint venture. Whatever the purpose, do not confuse effort with say, a marketing or a production plan.
Once you chose which one or more of the 7 you want to use and calculate exactly how much impact they have on meeting your plan, you would now have a definite approach on how to make your plan work. It seems simple. At that's what it's all about. It's about how to make your plan work the easiest and smartest way you can eliminating all the guesswork or trial and error methods. Want to increase your profit? This is a good way to do it. So, you see, once you decide which of the 7 ways you're going to do, then the only thing left for you to do is figure out how to make the one or ones you have chosen work.