Don't get me wrong here; I have no multicrew experience nor have I ever flown anything heavier than a Seminole, but I have flown with probably 50 different students as a FI - and here's my two cents:
There is what you must do, and what you may do. You must follow SOP and you must comply with manufacturer's procedures, and you must follow regulations. You may listen to the tips and tricks of your captain. You may choose to implement it, parts of it, or refuse it, for various reasons. Not listening to your intro-lesson-student, your 200-hr-young-copilot, or your company chief flight, may make you feel better about yourself, but chances are that neither of you are completely right.
Really, if I could be right only 55% of the time, I could be a stock broker, earn millions a day, and buy aviation as a whole, and decide what is right and wrong. So how many of us are right about most of what we say?