<code lang="Visual Basic">
Private WithEvents app As Application

Private Sub Workbook_Open()
    Set app = Application
End Sub

Private Sub app_WorkbookBeforeSave(ByVal Wb As Workbook, ByVal SaveAsUI As Boolean, Cancel As Boolean)
' add the footers to each sheet when the workbook is saved
    
    ' check the author of the workbook
    For Each p In Wb.BuiltinDocumentProperties
        If p.Name = "Author" Then
            ' if the author matches continue to add the footers to each sheet
            If p.Value = Application.UserName Then
                Dim sht As Worksheet
                For Each sht In Wb.Sheets
                    With sht.PageSetup
                        If .RightFooter = "" Then ' do not overwrite an existing footer
                            .RightFooter = "Right footer text!!"
                        End If
                        If .LeftFooter = "" Then
                            .LeftFooter = "Left footer text!!"
                        End If
                        If .CenterFooter = "" Then
                            .CenterFooter = "Center footer text!!"
                        End If
                    End With
                Next
            End If
        Exit Sub
        End If
    Next
    
End Sub

</code>