By clicking the 'Settings' button in the top menu and opening 'Advanced Settings' there you'll be able to change how your article appears in search engines and social media.

SEO

Change the article's meta title and meta description, or add some of your target keywords.

Social media

Editing the article's social title and description will change how it shows up on Facebook, Twitter or other social media websites. You can also add an image that will be used in the article preview when somebody shares it.