Rightg-click on the sheet tab and then use a "Worksheet_BeforeDoubleClick"
event.

Private Sub Worksheet_BeforeDoubleClick(ByVal Target As Range, Cancel As
Boolean)
Const WS_RANGE As String = "H10"     '<== change to suit

   On Error GoTo ws_exit
   Application.EnableEvents = False

   If Not Intersect(Target, Me.Range(WS_RANGE)) Is Nothing Then
       With Target
       '   do your stuff
       End With
   End If

ws_exit:
   Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click