The instructor may assume responsibility for all issues related to organizing training sessions. This especially makes sense when trying keep startup costs down. Otherwise, the instructor can hire others to enroll people and organize training sessions.
It’s also possible that you yourself might be only the organizer and busy yourself with enrolling attendees and setting up educational events. You might hire someone else to use the methodologies in this book to do the actual teaching or invite an experienced instructor to fly in – you may find the contact information for such instructors on the School’s website.