Indigo registers four menu locations. Manage them in Appearance → Menus: create a menu, add your pages and categories, then check the location under Menu Settings → Menu location.
Top Menu — the slim dark bar at the very top (About, Blog, Contact in the demo), next to the social icons.
Main Menu — the primary navigation below the logo, with dropdown support (drag items slightly to the right to nest them).
Mobile Menu — optional: when assigned, this menu is shown on mobile devices instead of the Main Menu. Useful for shorter, mobile-friendly navigation.
Footer Menu — a simple links row in the footer (Privacy Policy, Terms, etc.).
The WooCommerce cart button next to the Main Menu can be turned off in WPZOOM → Theme Options → General → Display WooCommerce Cart Button in the Header? — see WooCommerce & Extras.