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