Follow the steps given below to change booking intervals:
Go to ‘Settings’ from the toolbar on the left side of the screen.
Go to the ‘Guardian Booking Flow’ section under the ‘Appointment Settings’ tab.
Scroll down to find ‘Availability options’.
Ensure that the ‘Availability to be shown in time interval’ is set to ‘Fixed’ using the drop down menu.
Set the booking interval according to preference and requirements.