The Content screen section allows community admins to add and remove content from the Knowledge feed on community homepage, including questions, videos, links, files, topics, and articles.
To add content to the community:
In the Add content column, in the Search for content... field, start typing the name some content.
A list of relevant content appears.
Click the plus (
) +.
The content is added to the Community content (most recent) column.
...
To remove an item of content, click the cross (
x) to the right of the content.