A customized tour is rarely advertised outside the group. Instead, potential tour participants find out about it via flyers, a meeting, word-of-mouth, or an organization's newsletter. They can then buy the tour in a number of ways. They may call the tour company and identify themselves as members of the group, book it directly through their organization, or sing up directly through the person in the organization who has spearheaded the trip (a teacher at a school, for example).