Hi Pierce,
It is only possible with a macro.
Copy this macro in your SHEET module. Double click on cell A1 to activate the macro.
Note : you can remove the conditional formatting for the horizontal line.
Private Sub Worksheet_BeforeDoubleClick(ByVal Target As Range, Cancel As Boolean)
Dim rg As Range, c As Range
If Not Intersect([A1], Target) Is Nothing Then
Set rg = Range("E2:E" & Range("E" & Rows.Count).End(xlUp).Row + 1)
For Each c In rg
With c.Offset(0, -4).Resize(1, 6).Borders(xlEdgeTop)
.LineStyle = xlNone
If c.Offset(-1, 0).Value <> c.Value Then
.LineStyle = xlContinuous
.Weight = xlMedium
End If
End With
Next c
End If
Cancel = True
End Sub
Bookmarks