Can't connect to SITL at work


I am trying to use the simulation tab on Mission Planner while on my workplace PC, however, I do not have the appropriate permissions. IT launched it as admin and it works.

Can someone give me an overview of how the SITL prepares itself and how it differs from connecting to a physical flight controller? When connected to our actual rover, I can download firmware and the maps just fine. How does SITL differ?

(sorry if my question is ignorant; I’m very new to this)

What about reading the docs ?