You can use article status to track the progress of an article from creation to review to approval. This setting is only to help you with your workflow. It does not affect how the article is displayed to the end user.
1. Click on the article's title
2. Modify Assigned to and/or Set status
Optional: Use the Bulk Edit interface
You can change the assignee or status of several articles at once using the Bulk Edit interface. If you are not familiar with how to use the Bulk Edit interface, refer to the following article: How to Bulk Edit Article Properties and Actions