group dynamics

I usually take the role of one of the main characters that talk often and are important to the story.  I like that role because I like being the main characters. I like working with my friends because they have so many ideas that we can add in the story. And we get twice work done. But, sometimes they get distracted and we can't get half the work done. I usually resolve group conflict by telling them that
we wouldn't get anything done by arguing and I would try to settle them down. It works most of the time but sometimes they keep going no matter what I do.  What doesn't work is gaining up on each other so to make the other person see his mistake. That separates friends and makes people feel left out. I would tell them to knock it off or stop it. If I wasn't being listened to I would speak up and try to get their attention, and if it works I would tell them my plan. The most difficult situation I have ever been in is when the teacher wasn't in the room and my group, my friends were arguing at each other. It was hard seeing all my friends yelling and screaming at each other.