Q: For public hols, does it stop you booking or just block out the day?
A: It's an annotation at the top of the day. It will not stop people from booking.
Q: How do I set up a specific spot in my diary for a new client booking?
There are three ways you could do this:
1: Set up a recurring appointment in Practitioner Availability for that date and time and in the Notes dropdown type in New Client
2: Set a up a meeting type of New Client. Create a recurring meeting for this date and time.
3: Create a Client called New Client. Make an appointment for the specific date and time. Copy that appointment as many times as required.