void OnGUI(){
    if (menu && sMenu == "Main") {
     for(int i = 0; i < 4; i++){
      if (GUI.Button(new Rect(Screen.width/3, (Screen.height/10 + Screen.height/15)*i + Screen.height/4, Screen.width/3, Screen.height/10), NameButton[i])){
       switch (i){
       case 0:
        sMenu = "Back";
        break;
       case 1:
        sMenu = "Settings";
        break;
       case 2:
        sMenu = "About";
        break;
       case 3:
        sMenu = "Exit";
        break;
       }
     }
     }
     if (sMenu == "Settings") {
      sensitivityValue = GUILayout.HorizontalScrollbar(sensitivityValue, 1.0F, 0.0F, 10.0F);
      GUILayout.Label("Чувствительность мыши");
      }
      }
   }