Xbox One Just bought new Xbox One S / Trouble trying to use two controllers

[Michael_Q]

I'm trying to get back into XBox with Xbox 1 S . Trying to play a basic game Brain Challenge and use two controllers. Can't figure out how to set them up so my wife can keep track of her own scores. Do we BOTH have to have a paid account with XBox or can we both use my account? I can't seem to connect the controllers so that anything by my name shows up on both. Any ideas? And if we both need an account is there a recommended way to do that? Thanks in advance.