I have a complex problem that needs fixing quickly. I do not want multiple people working on the problem as they are likely to interfere with each other. So, I

I have a complex problem that needs fixing quickly. I do not want multiple people working on the problem as they are likely to interfere with each other. So, I have a limited set of people that can fix my problem. I need to check who is available, and I'm doing this in order of my own preferences. (who I think can resolve the problem fastest) However this is very much an edge case. I'm a proponent of just asking the question without saying hello at all.