When making a turned based game should I use the Nav modifier or do i have to make my own grid? which is easier?

Hi, i’m am a noob when coming to blueprints, but i am trying to make a turned based game like a Mario Party , and i don’t no where to start ? I’ve started out using the top down starter kit , but what I’ve been seeing is that people make their own grid. should I do the same. What do I do and are their any good any tutorials that I can follow to make a grid or make a multiplayer game please.