The Design Manager allows you to copy web parts from the template page to the source page. The properties in this section apply to this use.
Select this radio button if you want the web parts on the template page to be placed above the existing web parts on the source page. This is the default selection.
Select this radio button if you want the web parts on the template page to be placed below the existing web parts on the source page.
Select this radio button if you do not want to copy any web parts from the template page to the source page.