Side note: The interviewers may give you your participants not in any of the mentioned categories.
I have no specific advice for you because the interviewers want to see how creative and collaborative you are. Therefore, let your creativity soar and have fun with your group members.
I got the Paroles one. Therefore, our group has to design a program that helps paroles to know how to have a healthy life by creating exercise events and dietary awareness programs, such as teaching them to cook their meals and took them to a tour to Whole Foods.