Organisation Public Holidays
This setting allows the organisation to select the time category that adheres to public holiday rules. This functionality grants users the flexibility to designate periods as public holidays according to their preferences or organisational requirements.

The recommended default setting is 'Public Holidays'

Whichever time block/s is chosen, will affect the Scheduling page.
Go to:
Settings > General Config > Organization Public Holidays
Suspend Care Plan on Public Holiday
This option sets how bookings will be treated if the booking duration is from a non-holiday into a Public Holiday, specifically, overnight bookings.
This is tied to the above setting: Organisation Public Holiday where admins can set what time block/s their organisation would like to set as a Public Holiday.
Bookings Starts Within Block
If the booking duration covered a a Public Holiday, but started on a non-Public Holiday, the booking will use the non-Public Holiday rate.
Booking Overlaps Block
If the booking duration covered a Public Holiday, and started on a non-Public Holiday, the booking will use the Public Holiday rate.