Private Sub Workbook_SheetActivate(ByVal Sh As Object)
    With Application
        If .WindowState <> xlMaximized Then .WindowState = xlMaximized
    End With
    Select Case Sh.Name
        Case "LUNDI", "MARDI", "MERCREDI", "JEUDI", "VENDREDI", "SAMEDI", "DIMANCHE"
            [A1:AR30].Select
           
        Case "INTERIM" 'select ce que tu veux ici
            [A1:H25].Select
           
        Case "chauffeur samedi" 'select ce que tu veux ici
            [A1:H37].Select
            'etc....
    End Select
    ActiveWindow.Zoom = True
    Application.Goto [A1]
End Sub