With the content management workflow you can define editors, reviewers, publishers and approvers for knowledge base articles.
To introduce a review process, you can set up a collaboration-enabled workflow for a content management team, including editors, reviewers, publishers, and approvers. In a content management workflow, articles can be assigned to approvers, users can follow the approval process, and articles can be published in a controlled way. To create a review process, select users to manage the workflow:
All articles in the workflow are in draft mode until published.