Here are the steps to create your own multiplayer controls in Unity which we discuss in greater detail below. What we came up with was a simple straightforward process that was so easy to integrate with our current code it was astonishing. We began looking for resources about implementing multiplayer controls in Unity and allowing multiple devices to map to multiple players.
We recently began prototyping our latest game idea with Unity and decided we should implement local multiplayer and quickly realized we had never developed a multiplayer game with the type of controls we envisioned. Unity Multiplayer: Create a Multiplayer Game Using the New Input System for Multiplayer Controls Introduction