This point forward or this section forward are two different things. Both options are in this code.
Code:
Sub Tabulator()
Dim aTbl As Table, oRng As Range
Application.ScreenUpdating = False
'Set oRng = ActiveDocument.Range(Selection.Range.Start, ActiveDocument.Range.End)
Set oRng = ActiveDocument.Range(Selection.Range.Sections(1).Range.Start, ActiveDocument.Range.End)
For Each aTbl In oRng.Tables
aTbl.Rows.Alignment = wdAlignRowLeft
aTbl.Rows.LeftIndent = InchesToPoints(0.38)
aTbl.Rows.WrapAroundText = False
Next aTbl
Application.ScreenUpdating = True
End Sub