Your question is Sketch System P&IDs From Vague Notes. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Put you in front of a whiteboard and have you sketch P&IDs for an entire system based only on a few vague comments from the hiring manager, no functional specification or process description.