Patient portal - Prevent the patients from booking if there are less than 24 hours remaining before the start of the available time slot

Affected users: All users managing the appointments.
Task affected: Booking via the patient portal.
Impact: The client would like patients to be unable to book an appointment if there is less than 24 hours left before the start of the available time slot.
Current state: The patients can make appointments until the start of the available time slot.
Competition consideration: N/A