When you want to create a new article there are several ways of doing this. Depending on the set of applications you have in your organization, you can do this in different ways:
If you use Full package, both an article, a plan and an assignment will be created.
If you only want to create a new article, you use New article.
If you don't have an assignment for the article, you use the three dot in top of My assignment.
If the assignment already is created, you can click on the three dot on the assignment to create a new article.