His personal 'conduct' reflected poorly on the company. [=he behaved in a way that made the company look bad]
The way you 'conduct yourself' in an interview often determines whether or not you get the job.
Laws and regulations control the 'conduct' [='management'] 'of' business and trade.
(..) That's great. It's alright. Truth is, I don't think people... understood what it was I was doing at Shaffer. I wasn't there to conduct. Any fucking moron can wave his arms and keep people in tempo. I was there to push people beyond what's expected of them I believe that is... an absolute necessity. (..)2014 Whiplash
(..) He didn't do anything. What's wrong with you? It's over ok? He's out of your life, why would you let him get away with what he did to you? Would you characterize his conduct as extreme Andrew? Did he ever intentionally inflict emotional distress? This will not be a public hearing, you know? (..)2014 Whiplash