If the rules aren't handy or if a rule can't be located or clarified, how should you deal with a disagreement? Is this decided among players in the hand or does the table vote on it?
study the rules, so when something comes up, you can say authoritatively "here's what we do...". It is excessively awkward to try to leaf through a printout in the middle of a hand to find the relevant rule.
You don't have to be right all the time, just often enough that everyone thinks you know what you're talking about. You don't have to be perfect, just better than anyone else.
the first rule is "whatever the floor says is final".
As host of your game, you need to take charge of it. If you let people discuss and vote, you just let some of them feel they weren't listened to or worse, you encourage people to try to influence your decisions in their favor.
If you're not the host and the host is weak, build a reputation for knowing the rules and a neutral attitude. If you do it right, people will turn to you and ask "what do we do here?", but it takes diligence to build that trust.