This plugin can work in two ways.

The first way is useful to display a different Facebook page for each CB user profile, allowing to the users to enter its own Facebook page URL from the front-end.
On the CB tab page you have to select "CB field" as page source, then you have to select, from the drop down menu, which field contains the Facebook page URL.

The second way is useful to display the same Facebook page to all CB user profiles; in this case only the Super User can choose the page URL from the back-end.
On the CB tab page you have to select "Custom URL" as page source, then you have to enter below the Facebook page URL.

Then you have all the Facebook API options to include a page: page width and height, hide the cover, show the facepile, small header, html5 or iframe inclusion, http or https inclusion.

Intro text and end text are available too in the plugin tab, to wirte something about the page to website visitors.