Customizing your business hours allows you to decide when, where and how you want to receive your calls.
Click on 'Settings' in the upper right corner of the website. Inside the red bar.
Select the "Main number" tab.
Choose the office hours strategy "Customized office hours" and define the days of the week for which you want to set the business hours.
When you finish setting up business hours, click "Save" at the bottom of the section.