Control when you will receive calls to your number. Setting business hours to receive calls only during your business operating times, by not setting business hours, you can be contacted 24/7.

Go to Numbers
Select 'Manage'
The Manage Numbers Page will open.
Select 'Business Hours'.
Turn 'On'
Set office hours during which people can call your phone number. Outside of the office hours, the caller will hear an announcement.
Enter your business hours and click 'save'.