To create Navigation Menu please follow the steps above:
  1. In your Wordpress dashboard from left sidebar go to "Appearance > Menus"
  2. In Edit menus tab click create a new menu link.
  3. Give the navigation menu some name e.q. "Main menu" and click "Create menu" button
  4. Add pages, posts, custom links etc. from left sidebar by checking necessary links and click "Add to menu" button
  5. In the "Menu Settings" section, you can choose whether to add new top-level pages automatically to this menu and select the Theme location checkbox (e.g., "Primary Menu").
  6. Click "Save menu" button