Change the default Standard layout which provided by ATtheme for the frontpage can't work

First,i go to the theme setting page under the appearance and set the Standard layout in the Panels & Gpanels. I change AT Inset left layout from first one to second one.

After that I goto the Structure/Panels and edit the Home page.But the layout section don't appear the second one layout in the Inset left I change in the first step.It is still the first one. Could someone to tell me how to use the other layout under Inset 、Six、Five and don't use the default one.