Depending on whether you are in a project or a knowledge base, this option enables you to define protections.
When you are in a knowledge base, the following window will open:
Because only a knowledge engineer can open en knowledge base, this option is only available to the knowledge engineer. See Knowledge base protection for further details.
When you are in a project, the following window will open:
This functionality is only available for domain experts. See Knowledge base protection for further details.