How do you make sure that both signals are powered?

So, I’m making a "map" to try to impress my friends with my redstone and commands, and I wanna make a voting system for a bedwars game. So, I want to make it so that two people have to agree on one mode to prevent complete chaos(there’s gonna be three people including me), and I want to make it so that once those two players step on certain pressure plates, it will run a command. If one player steps on a pressure plate of a certain mode, it’s not chosen. If no one steps on the pressure plates, the mode isn’t chosen either.