Sub test()
Dim Chemin As String, NomFichier As String, NouvClass As Workbook
Chemin = ThisWorkbook.Path & "\"
NomFichier = Sheets("Saisie").Range("P5").Text
Sheets(Array("123-1", "123-2", "123-3")).Copy
Set NouvClass = ActiveWorkbook
NouvClass.SaveAs Chemin & NomFichier & ".xlsx", 51
NouvClass.Close True
End Sub