You can create customized layouts and save them into separate categories for future use. These customized layouts are termed as custom layouts. Unlike default layouts, you can modify and delete custom layouts, and specify whether grid lines and filter area must be displayed in the layouts. You can create custom layouts in advance and then use them in your dashboard.
After you select a layout for a dashboard, you can modify the layout to add or delete widget placeholders. For more information, see Modifying dashboard layouts.