Intervention methodology use can be seen as a Wittgenstein´s Language Game, this equivalence allows flexibility at the moment of combining methodologies from different paradigms in problem – solving. This is the argument developed on the first of these three – parts series. However, on the same text it is pointed out that the concept of Game is so wide that it does not seem to provide guidance for intervention processes. For that reason the purpose of this second part is to explore ways to rule on intervention activity, looking for guides, without losing flexibility for the use of methodologies, basing the argumentation on the concepts of rule and principles in language pragmatics.