Time restriction - Zoho Booking and Zoho Meeting

Time restriction - Zoho Booking and Zoho Meeting

If we integrate Bookings and Meeting, and charge the customer for 15 min slot, then the meeting will be automatically scheduled. Eg 11.15 AM to 11.30. 

What happens
  1. If meeting starts at 11.20? Will it extent till 11.35 or ends at 11.30
  2. If the meeting does not end by 11.30? Can we extend it or will it stop?
  3. Can we restrict to the said timings? At the end of 15 min, it should disconnect with 1 or 2 min grace?