Final Answer:
A PDF document on an active HR case can be generated by the Assigned to person (Option 4).
Step-by-step explanation:
Assigned to Person: In many HR case management systems, the person assigned to the case typically has the capability to generate documents. This ensures that the individual handling the case, often an HR professional or designated personnel, can create necessary documents such as PDFs.
Autogenerated by System Configuration: While some systems may have the capability to auto-generate documents based on predefined configurations, this may not always be the case. The ability to generate PDFs is often a feature associated with user actions rather than automated system configurations.
Subject Person or Employee: In most cases, employees might have limited access to generate official HR documents due to privacy and security considerations.
Option 4 is the answer.