Menus
Menus can be created and used in various places in the theme. To access the menu editor, go to Appearance > Menus. Access to this area is limited to Editors and Administrators.
Set Primary Navigation
Once you have created a menu, you have the option to use that menu as the Primary Navigation for your site, displaying under the site's Title Bar. To set a menu as the primary navigation, select that menu and look under “Menu Settings” and check the box that says “ Display location: Primary Navigation”
Adding a Secondary Nav to a Page
In the Page editor, add the “Page Settings” block, then select “Sidebar Content”. This will show a select field for you to choose an existing menu.