MarginBottom Property

Returns or sets the distance (in points) between the bottom of the text frame and the bottom of the inscribed rectangle of the shape that contains the text. Read/write Single.

Example

This example adds a rectangle to myDocument, adds text to the rectangle, and then sets the margins for the text frame.

Set myDocument = Worksheets(1)
With myDocument.Shapes.AddShape(msoShapeRectangle, _
        0, 0, 250, 140).TextFrame
    .AutoMargins = False
    .Characters.Text = "Here is some test text"
    .MarginBottom = 0
    .MarginLeft = 100
    .MarginRight = 0
    .MarginTop = 20
End With