To add more articles on this page as seen in the screenshot:
Public Management > Site Configuration > Navigation > Footer Article > Select 'Add' Button
Article Title | The title of the articles, which will also be what is shown on the left pannel
Language | Articles to be showcased in the various form of languages selected on the Exchange
Rank | The sequence of the articles
Article Alias | Another way to identify the article
Content of the Article | The content / body text of the article