How we move GUI.skin custom styles

Hello, I have my own menu buttons like play,options etc so i have create my own GUI skin and on this i use custom styles element to access those buttons on normal,hover ,active(i.e button selection or unselection on mouse) but my problem is this how i move those buttons on click from the screen?? My code is like this public Texture2D Play; public Texture2D Options; public GUISkin guiskin; void OnGUI() {

         GUI.skin=guiskin;
 
         if(GUI.Button(new Rect(Screen.width/2-Play.width/2,-Screen.height/4+Play.height/6,Play.width,Play.height),"",guiskin.customStyles[0]))
         {
              
         }
 }

Thanks in advance....