How to lock an article
You can lock an article so that only you can edit it.
Some articles can be of higher importance to your organization than others. You might want to ensure that changes in these articles cannot be done easily or set them up so that only specific user roles are able to make any changes.
To unlock an article, first verify that the role you are assigned has permission or seniority to unlock articles. Then go to the article options, and click Unlock Article. If your user role is not allowed to unlock an article, you will not see the unlock button.