Create a new ticker
Ticker articles are normal articles. To create a newsticker, it is necessary to create a new post and check the box "Enable newsticker" in the "Newsticker" metabox in the right sidebar.
Add items to the ticker
To add content to the ticker, it is necessary to create newsticker items by clicking "Newsticker" in the left dashboard sidebar → Add New. Then you can create a new item for the newsticker and fill it with content like for every other post.
In the sidebar the assigned liveblog can be selected and the post can be marked as important or as a resume box:
Properties in the CatalogAPI
The liveblog itself can be recognized by the property "isNewsticker". In case this is set to true, the article is enabled as a liveblog.
The items on the other hand have a property "newsticker" with the ID of the assigned liveblog as value. They also have the properties "newstickerIsImportant" and "newstickerIsResume" which correspond to the checkboxes in the article.