Insert columns and rows in PowerPoint Tables - without changing existing PowerPoint table width. Easily insert a new column or row into a PowerPoint table without impacting table width. PPT Productivity add-in has four buttons that provide single click access from the ribbon - insert a column to the left or right, or to insert a row above or below. Adding columns will not change the existing width of your PowerPoint table, however adding rows will increase PowerPoint table height. Download your