How do I add buffer time or scheduling intervals before/after synced calendar appointments for Zoho Booking availability?  

I have Zoho Calendars, Zoho CRM Calendars, and Outlook enabled in Zoho Bookings.  I have the "Scheduling Interval" in Zoho Booking set to 45 minutes.  I want this to apply to the synced appointments, not just Zoho Bookings appointments.   

Currently, Zoho Bookings blocks out availability for the synced calendar appointment, but not the buffer/interval time.