When at an MCI, assignments are given to you. For example “take those three patients from that car right there to Local Hospital.” But we all knew that already.
When those instructions are given, it isn’t necessary for you to hang around and give scene reports to the arriving units, directing them to where their patients are.
Incident Command is the one with that responsibility.
When informed that you are to “transport them to Local Hospital,” that doesn’t mean you hang around for another 15 minutes with your thumb up your butt then ask the IC “hey, is it cool if we leave now?”
“Your ambulance should have left 15 minutes ago!”
MCIs work much, much smoother with just a tad bit of cooperation.