BottomMargin Property
Returns or sets the distance (in points) between the bottom edge of the page and the bottom boundary of the body text. Read/write Single.
Example
This example sets the bottom margin to 72 points (1 inch) and the top margin to 2 inches for the active document. The InchesToPoints method is used to convert inches to points.
With ActiveDocument.PageSetup
.BottomMargin = 72
.TopMargin = InchesToPoints(2)
End With
This example sets the bottom margin to 2.5 inches for all the sections in the current selection.
Selection.PageSetup.BottomMargin = InchesToPoints(2.5)
This example returns the bottom margin for section 1 in the selection. The PointsToInches method is used to convert the result to inches.
Dim sngMargin As Single
sngMargin = Selection.Sections(1).PageSetup.BottomMargin
MsgBox PointsToInches(sngMargin) & " inches"