Macro for running a macro when any cell in a range of cells changes

Hello Experts,

Greetings. I am thankfull for all the supports you provide. As usual, I need your support to generate a macro.

I have Sheet1, in which Cells D14 to C20 are the targets. If any of these cells changes, I want to run the following macro.

Sub Button11_Click()
'
' Button11_Click Macro
' Macro recorded 12-25-2013 by gmk
'
' Keyboard Shortcut: Ctrl+f
'
    ActiveWindow.SmallScroll Down:=-9
    Range("C14:D20").Select
    Selection.Copy
    Range("C31").Select
    Selection.PasteSpecial Paste:=xlPasteValuesAndNumberFormats, Operation:= _
        xlNone, SkipBlanks:=False, Transpose:=False
    Application.CutCopyMode = False
    Selection.Sort Key1:=Range("D31"), Order1:=xlDescending, Header:=xlGuess _
        , OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, _
        DataOption1:=xlSortNormal
End Sub

Can you please help me. My sincere thanks for all experts.

Should I paste your program in the Module / Worksheet or in the Workbook?

Regards,
gm2612