This example sets the spacing after the first paragraph in the active document to 12 points.
ActiveDocument.Paragraphs(1).SpaceAfter = 12
This example sets the active document to three columns, with a 0.5-inch space after the first column. The InchesToPoints method is used to convert inches to points.
With ActiveDocument.PageSetup.TextColumns
.SetCount NumColumns:=3
.LineBetween = False
.EvenlySpaced = True
.Item(1).SpaceAfter = InchesToPoints(0.5)
End With