PageSetup.VerticalAlignment (Word)

Returns or sets the vertical alignment of text on each page in a document or section. Possible return values are wdAlignVerticalBottom - Bottom vertical alignment, wdAlignVerticalCenter - Center vertical alignment, wdAlignVerticalJustify - Justified vertical alignment, wdAlignVerticalTop - Top vertical alignment.

Documents(1).PageSetup.VerticalAlignment = wdAlignVerticalCenter