How many management plans on a project?

Now that we have been debating the questions on:

  1. Do the PMBOK® Guide process groups repeat or are they project phases? And
  2. How many charters are there on a project?

What do you think about the following?

How many management plans are there on a project?

If you think there is only when, when would you develop it?

If you think there are more than one, then what are they? When will you develop them?

I will let these questions open for a few days – to hear your opinion. Then I can offer the approach that we have developed as part of our The Customizable and Adaptable Methodology for Managing Projects (CAM2P).