This example deletes the third row from the table in shape five of slide two in the active presentation.
ActivePresentation.Slides(2).Shapes(5).Table.Rows(3).Delete
This example applies a dashed line style to the bottom border of the second row of table cells.
ActiveWindow.Selection.ShapeRange.Table.Rows(2) _
.Cells.Borders(ppBorderBottom).DashStyle = msoLineDash