To set up a main menu with 2nd level and 3rd level navigation that is only visible on the 2nd level navigation page:
  1. Navigate to onMesage > Website
  2. In the section Pages & Menus, build each menu item. Menus can be either link to pages or regular pages.
  3. Select the Master Layout and add the menu widget to the master layout
  4. In the Menu Settings for that menu, select the Start at Level and the End at Level User-added image
  5. To create a level 3 menu on a level 2 page, create a style and include the links content type to connect to the level 3 pages on the level 2 page.