How does Crichton's role change over the course of the play, The Admirable Crichton?

When the travelers find themselves on the deserted island, however, it is Crichton who is best able to provide for the group's survival. He can start a fire, build a shelter, hunt, fish, and cook—in short, he can deal with this new environment. Crichton, then, becomes the master, and the London lords and ladies become the servants, attending to their duties under the guidance of Crichton.