1) First, you need to download and install the Outlook CalDav Synchronizer extension.
https://sourceforge.net/projects/outlookcaldavsynchronizer/
Once you have completed the installation on your computer, restart Outlook. The extension will then be
visible in Outlook as a tab located in the blue ribbon at the top.
2) Launch Outlook, then click on CalDav Synchronizer, followed by Click Synchronization Profiles to set up the new profile
3) Input the server settings.
4) To retrieve the server settings for the DAV URL:
Log in to cPanel -> Email Accounts -> Select the Email Account -> Configure Calendars and
Contacts -> Direct URLs for Calendars and Contacts
You can obtain the URL from Secure SSL/TLS URLs or Non-SSL/TLS URLs in Calendar.
Username: Complete email address
Password: Password for the email account
5) Your calendar is now configured. Any modifications made in Outlook or Webmail will be synchronized automatically every 5 minutes.