From my group Experience I've found many forms and met many people as well. Our group breaks the page clearly. When there is a problem that you do not understand, there may be a slight problem during the work. When we work with our close people, it will pass well, But sometimes it's not good for team work., there may be different ideas. The good point of the group is to accept the opinions of each other. When the problem happened, it solved. It's easier to talk, too. The bad point of the group is Work may be done slowly