Bobo:
A tailor is your friend! That's first. I can't tell you how many things fit funny as my body grew and grew and i really wanted to look like a sharp fat dude. Tailor fixes pants, shirts, coats. I mean it's money but I assume you're talking about a professional situation so 5 or 10 buckaroos for an alteration won't kill ya.
Second - to be comfy, let the belly hang out and put a loose (and tailored) jacket over it. Or just let it be "out there" and others can deal.
Around the waist is ok, but ya kinda look like a barge and it can be distracting or uncomfortable because the pants slip down anyway and you have to keep pulling them up which sux.
Suspenders are a classy way to pull off the "fat man in charge!" thing. AND they hold up the damned pants.
Hope this helps!
Yup, Quite telling that when you see big guys they are really dressed up or seemingly underdressed and that’s because expensive tailoring is the only option in many cases