Use Holiday Hours to control custom hours for specific dates.

Prevent booking requests on days you are closed.

Customize the booking start times for specific days for the entire business or for specific services.

Go to schedule and click on holiday hours

Click Add a rule.

Choose a name for this rule. Then choose a date range for when this rule applies. And choose the start time format: time or text labels.

If you are setting it to 'Closed' then it doesn't matter whether you choose 'Start times' or 'Time labels'.

Next you can choose which services this rule applies to. Select specific service or entire business.

Click on Add button to add holiday hours. Now when booking, the system will enforce the rule.