Use this interface to quickly change content on individual screens.
In the top menu, go to the DATA FEED section and select the desired screen.
In the right column, you can see thumbnails of posts that you can edit.
CAUTION: If no preview is displayed, you do not have a PUBLISHED Data Feed post on that screen.
After clicking on the selected post you can see the individual fields (defined in DataFeed) and you can change their content. When you have finished editing your changes, press PUBLISH to post them to the screen.