Download the plugin from:
https://wordpress.org/plugins/connect-daily-web-calendar/
Install, and activate the connectDaily Calendar plugin. We have a tutorial available here.
From your WordPress Dashboard, navigate to connectDaily | Settings and enter your calendar URL. If you haven't signed up for a connectDaily calendar, click on the provided link to signup for a calendar.
After the plugin is installed and activated, go to the connectDaily Settings page. Follow the on-screen information to configure it.