The Layout Editor lets you control the display of any standard, built-in block in the left and right columns of your store. You can add, rearrange, lock in place, and remove blocks from view. The Layout Editor cannot be used on single-column pages, and is disabled for the Customer Account Dashboard. To apply block layout changes to the Customer Dashboard, see: “Creating a Frontend App,” in the Magento Go Design Guide.
Note: Before launching the Layout Editor, make sure that your browser is set to allow popups.