It's extremely difficult to interpret, I agree haha. The MS4 leads you on the tour.
Everyone has two interviews this cycle. One is a traditional open-file 45-minute interview with a faculty MD (or possibly PhD? not sure), the other is a shorter, 20-minute closed-file interview ("CFI") with a member of the admissions department administration.
When you check in at the admissions office you'll be given a personalized itinerary for your day, here's what mine said:
8:00 am - Breakfast with Medical Students in Shell Cafe (optional)
8:30 am - Check-in
8:45 am - Orientation
9:15 am - Tour with Fourth Year Medical Student
12:00 pm - Lunch with Faculty: Drs. So-and-so
2:00 pm - Financial Aid
2:30 pm - Dean's Wrap-Up
Interspersed between those my interview times, locations, and interviewers were listed as well.