After selecting the "Service" tab in the Settings page, select the service you wish to modify and click on its corresponding "Edit" button.

This section allows you to configure the emails your clients will receive when they book an appointment. In the Email Notification section of the page, select whether you would like your business address to appear in notification emails by checking off the appropriate box. Next, enter any note you wish to include in the communication to you customers. Before completing this step, be sure to view a sample email by clicking on the "View Sample Notification" link.

Don't forget to click the "Save" button at the bottom of the page to confirm your changes.