As you prepare your team to participant in The Cup, you might find helpful these webinar videos, created for teachers managing teams in the Philosothon—the Australian equivalent of the John Stuart Mill Cup:
This video on helping your students to understand the three most commonly used ethical frameworks. Start at around 3:00 and watch until 54:00.
This video on how to choose students for your team and how to do in-class training sessions. Start at around 2:00 and watch until 38:45.
Likewise, these resources from NHSEB–the American equivalent of the John Stuart Mill Cup–might prove helpful.