Time stamp on multiple column

Hi Zakisarvi and welcome to the Forum

You can do that by:

1. turning the first If statement  into a block If and negating the test i.e. run the code if a cell in column H was changed (also removing the "Exit Sub" ending)
2. adding an Else clause which sets the range for second column (M:M) and applying the If ... Nothing...Exit Sub test, otherwise running repeated timestamp code aimed at columns K and L.

I've done that in the attached file and shown the chnages in bold below:

Private Sub Worksheet_Change(ByVal Target As Range)

'  Timestamp Data but with 2 columns

'   TeachExcel.com

Dim myTableRange As Range

Dim myDateTimeRange As Range

Dim myUpdatedRange As Range

'Your data table range

Set myTableRange = Range("J:J")

'Check if the changed cell is in the data table or not.

If Not Intersect(Target, myTableRange) Is Nothing Then ' Do NOT Exit Sub yet!

    'Stop events from running

    Application.EnableEvents = False

    'Column for the date/time

    Set myDateTimeRange = Range("H" & Target.Row)

    'Column for last updated date/time

    Set myUpdatedRange = Range("I" & Target.Row)

    'Determine if the input date/time should change

    If myDateTimeRange.Value = "" Then

        myDateTimeRange.Value = Now

    End If

    Else ' check second target range

    Set myTableRange = Range("M:M")

    If Intersect(Target, myTableRange) Is Nothing Then Exit Sub

    Application.EnableEvents = False

    Set myDateTimeRange = Range("K" & Target.Row)

    Set myUpdatedRange = Range("L" & Target.Row)

    If myDateTimeRange.Value = "" Then

        myDateTimeRange.Value = Now

    End If

End If

'Update the updated date/time value

myUpdatedRange.Value = Now


'Turn events back on

Application.EnableEvents = True

End Sub

There are slicker ways of doing it but this is the easiest to understand hopefully.  If this fixes your problem please don't forget to mark this Answer as selected.