Recipes for Blending People to Make the Right Kind of Event

Why?

You blend coffee, whiskey, tobacco and even genes to make the perfect result. Why not people in an event? What is the formula?

How?

A series of articles about blending the right people for the right type of event. Each article should deal with a different kind of event and try and find the formula using experiments and experience of others who do and deal with that particular type of event.