There will be blocks of time where you won't want to book appointments with your Clients. This could be because you're doing something else you want to note in your calendar. Or if you've enabled the feature where your Clients are able to book their own appointments, you don't want to take appointments at that time. There are two ways to get this done:

Steps to follow

1. Click on the blue plus on the bottom right and click new appointment or go to the Calendar page and select the timeslot.
2. Choose the tab that reads "personal appointment" and give it a descriptive title
3. Create the appointment the same as you would a normal appointment

Like a normal appointment, you can reschedule, cancel and clone this appointment.

Permanent blocking - set your operating hours

If you want to block time on a permanent basis, it's a better idea to make a change to your operating hours. More info on updating operating hours.