25A Patch - New Models - What does Security Aministrator Refer to

As a part of 25A patch release, new models have been introduced as highlighted below. Here I would like understand how does system identify the IT Superuser. By importing these models, system creates Security Administrator control automatically. However, I am unable to understand how does system identifies the list of users that are part of IT Superuser. Could you please advise on the same or help me with documentation if any on this.

Thank You