From the E-MAIL section, click on "Calendars and contacts"
On the following page, retrieve the username and the server address to configure them on your device:
Some applications have limited support for retrieving CalDAV account information from the server. In this case, you need a direct URL, which is displayed at the bottom of the "Calendars and contacts".
Conclusion:
You have learned how to retrieve the information needed to synchronize the CalDAV address book from your cPanel