Your availability changes can be managed from the holidays page. This is quite useful especially for some unexpected reason you are unable to provide a service on any particular date or time.
To take a day/time off:
1. Select a service and availability.
2. Select a month and year in which you want to take the day off. Hit the close button.
3. Click submit. This will list all days in the selected month.
4. Take a day off by selecting one or more days and clicking the update button. If the availability contains time slots, then you will see a time slots button on each row. This will launch the take time off dialog. Check the time slots where you want to take time off and click the update button.