How to Add Facebook Comments to Your Blog Post
In the Publish Panel, enable the Facebook Option
Click Publish or Update Blog to see the plugin now enabled on your blog post.
How the Facebook Plugin Works
When you enable the Facebook plugin, a comments section will appear at the bottom of your blog post. By default, the comments section will be associated with the URL of the page that the blog post is embedded in.
For most people this is enough and will work for you. If however, you present multiple Narrative Publish posts on one page, or have a 'Home', or 'Collection' style page on your website, you can set the URL that Facebook should reference to, by entering it in the Post URL text field.
If you would like to enable the moderation features that Facebook provides you can add the Facebook ID of the user who has admin control over the comments section. Note: that user will need to be logged into Facebook for the moderation features to appear.