While editing a blog post select 'SEO Facebook' and complete the fields as follows
OG Title: Title that will be shown on Facebook. Typically the name of the company/agent/broker and phone number
OG Type: Enter the word 'website'
OG URL: The link to this blog post
OG Image: When FB fetches a preview, this is the image that will be displayed (1200 x 630 pixels is optimal)
OG Description: This is what FB will display under the Title and image