In a perfect world, having more than one advisor gives you more resources to turn to if you need them. Getting to know one another is the first and most important step. Start with each attendee. Have them introduce themselves and be sure they talk about their interests, past experience, and why they are there. As an aside, I got started on the Sunraycer Team as the Meteorologist but due to past experience, ended up spending much of my time handling all of the Logistics.
Some members have to be flexible enough to plug the holes which are bound to exist.
Socialize, have a pizza, or whatever. Team building is not just an idea, it is practiced in most work places whether in the public or private sectors. One person may do several or several people may do one. Leadership - There is a great tendency to break up the team into groups, such as Hull, Drive train, etc., and have a leader for each. This is satisfactory if each of these people is part of a Leadership group.