By using this option in the shape page the user can add MULTIPLE non-rectangular parts to the shapes table.
After selecting the type of the parametric part, click the Select button. This opens another dialog box so that you can specify the dimensions of the many parts you would like to input.
Add the dimensions and the name of the part. You can add as many parts as you want. After you click Add Parts Button, all the parts will be shown on the Shape Page Part Table. In case of any error, the lines are highlighted in RED.