Multiple players isolated to unique maps on one large map

I am building a new version of an existing game. I want to have 10 lanes one one large map that allows you to navigate to see all other players. Each player can only move their unit within their own lane/map to build their towers. How do I accomplish this? Do you have to create layers for 1 lane per layer or can you build all lanes in one layer and put constraints that only allow you to move your unit within your area but can move your camera anywhere? The two above questions might apply or I might not know other solutions tot his question. Please let me know how I would accomplish this. My Unreal 5 game would play like Line Tower Wars from WC3, to give you a reference on what I am looking to do.