If you are looking for a macro try this. Launch VBE using Alt + F11. From the
left tree view double click 'This Workbook' and paste the below code. Get
back to workbook. The below code will write the bookname and sheet name to
cell A1 on Save....
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
Range("A1") = "[" & ThisWorkbook.Name & "]" & ThisWorkbook.ActiveSheet.Name
End Sub