When The Spirit Of God moves among the people and things happen and new ideos and collectives are formed, it's important to remember that a thing is just that thing and not another. What do I mean by that?
The Evangelical section of Xtrianity has, in the last decade or two, either become absorbed into the so-called "Neocon" politics of America or has become the religious branch of the Republican party (which personally I think is a bunch of bologna, I'm Evangelical and I'm not a lackey for the elephant!). When a new group of people start out and the idea that unites them is that God has done something among them and they want to particpate (and continue) His' work, than soon enough they will find themselves pulled in several directions.
Should they become politically involved? If so, should members of opposing parties be denied access to their meetings? If they fight for the Pro-Life cause, are Pro-Choicers denounced and excommunicated? If they decide to be nothing but a "spiritual movement," what do they do when Hindus and Buddhists show up? What if a person or people start hammering away at a list of rules one must follow or believe in order to be a member?
I'm not saying groups shouldn't get involved or do any of the things I'm stating. I just think that people, especially those precious small groups of dedicated people, need to understand from the get-go the general pathos of what God is doing among them.
I think the Pentecostals learned this the hard way here in America: in the beginning many of their groups were assimilated and absorbed utterly by pet causes, rival 'denominations,' and politics (some of the early Pentecostal leaders segregated fellow black pentecostal leaders, as in the case of Charles Fox Parham).
If you are blessed with membership in a group of people who feel God is moving among them and they must do something collectively, you don't need to write a code book on what you have to do to be a member. But neither should you ignore this collective work and drift in and out of the cause. You (plural, all of you) should have a basic understanding of what God wants (ie, you must all discern His' intentions together). Only then will your group work like a team!