Make button inside ScrollView move when ScrollView scrolls

I want to place a button within a ScrollView and have it move as the ScrollView changes. Currently I have the buttons placed, but they do not move when the scrollview changes, though the rest of the contents do.

     private Vector2 scrollPositionSchematics = new Vector2(0,0);
     private GUIStyle style = new GUIStyle ();
     private Objtect[] schematicsArray = Resources.LoadAll ("Prefabs/Rooms");
 
     //Handles the HUD-GUI
     void OnGUI(){
 
         /*-----------------------------------------------------------------------------------------
          * 
          * Create the frame and contents for the HUD(Schematic) area
          * 
          *---------------------------------------------------------------------------------------*/
         HUDWindow ("Schematic",    //text to display in the header
                    19,            //size of the font
                    (int) Mathf.Floor(Screen.width/3*2),            //positionX
                    (int) Mathf.Floor(Screen.height/5*4),            //positionY
                    (int) Mathf.Floor(Screen.width/3),    //xSize
                    (int) Mathf.Floor(Screen.height/5)    //ySize
                    );
 
         //Display text for HUDWindow(Function)
         GUILayout.BeginArea (new Rect ((int) Mathf.Floor(Screen.width/3*2)+7,(int) Mathf.Floor(Screen.height/5*4)+50,(int) Mathf.Floor(Screen.width/3),(int) Mathf.Floor(Screen.height/5*4)));
         scrollPositionSchematics = GUILayout.BeginScrollView (scrollPositionSchematics,
                                                              false,
                                                              true,
                                                              GUILayout.Width(Mathf.Floor(Screen.width/3)-10),
                                                              GUILayout.Height(Mathf.Floor(Screen.height/5)-50));
         style.fontSize = 14;
         style.normal.textColor = Color.black;
         style.wordWrap = true;
         GUILayout.Label ("This is the Schematic tab.", style);
         CreateSchematicButtons ();
         GUILayout.EndScrollView ();
         GUILayout.EndArea ();
 
     }
 
     void CreateSchematicButtons(){
 
         //button size
         int buttonWidth = 50;
         int buttonHeight = 50;
         
         //for every item contained in the schematicsArray, place a button
         for (int i = 0; i<schematicsArray.Length; i++){
             if(GUI.Button(new Rect(0, scrollPositionSchematics.y+buttonHeight*i, buttonWidth, buttonHeight), "Button "+i)){
                 Debug.Log("Pressed button #"+i);
             }
             GUILayout.Space(buttonHeight);
         }
     }