Implement hand menu features

Assets/Scripts/Managers/GameManager.cs

@@ -26,6 +26,8 @@ public class GameManager : NetworkBehaviour
     [SerializeField]
     private bool autoConnectOrHost = true;
 
+    public bool IsMultiplayer => networkManager.IsHost || networkManager.IsClient;
+
     private void Start()
     {
         networkManager.OnClientConnectedCallback += OnClientConnectedCallback;