Returns or sets the amount of space (in points) to add below the contents of a single cell or all the cells in a table. Read/write Single.
expression.BottomPadding
expression Required. An expression that returns one of the objects in the Applies To list.
The setting of the BottomPadding property for a single cell overrides the setting of the BottomPadding property for the entire table.
This example sets the bottom padding for the first table in the active document to 40 pixels.
ActiveDocument.Tables(1).BottomPadding = _
PixelsToPoints(40, True)