Private Sub Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)
Select Case Sh.Name
Case "acceuil": If Target.Address(0, 0) = "I18" Then Application.EnableEvents = False: Feuil12.[B5] = Target
Case "Catégories": If Target.Address(0, 0) = "B5" Then Application.EnableEvents = False: Feuil5.[I18] = Target
End Select
Application.EnableEvents = True
End Sub