Change the menu display order
After adding one or more menu items, the Menu editor will display a list box that allows you to modify the display order. To change the display order, click a menu name, then click either the Move up or Move down button. When all items are in the order you want, click the Submit new menu order button. The navigation items on the left will be updated with your new order.
NOTE: Click the Menu editor link in the Site manager navigation bar to display reorder options for 1st tier menu items.
Change menu organization
You may change the organization of your site navigation structure by moving child menu items to different parent menu items. To move a menu item, click the menu item on the left to select it, then use the drop-down menu to select the menu under which you want this menu to reside. Click Update to change the navigation structure. The navigation items on the left will be updated with your new structure.