Setting up Navigation Menus works normally as it does for any WordPress theme. If you’re new to WordPress, you can learn more about menus in the WordPress Codex article.
Go to Appearance → Menus in your admin sidebar and click Create a new menu option..
Select Create a new menu at the top of the page
Choose menu items you want to add from the left and hit Add to Menu. Then hit Save Menu
Your new menu has been created:
Using the Custom Links and Pages boxes at the left, add
items to the menu and drag and drop to arrange them.
If you would like to use this menu in the primary navigation of the theme, scroll down to the Menu
Settings area, enable the checkbox next to the Main Menu menu locations.