Amend description of menu location in customizer Wordpress

Question

Amend description of menu locations in customizer? I just want to add note that I have limited menu depth. Not really sure how to do it.

I refer to this description under 'Menu Locations'

Your theme supports 2 menus. Select which menu appears in each location. You can also place menus in widget areas with the “Custom Menu” widget.

or to add description for Menu panel.

I tried like this

$wp_customize->get_setting( 'nav_menus', array(
'description' => esc_html__( 'new description', 'theme_name' ),
) );

Answer 1

You need to be modifying a section not a setting.

Try this:

add_action( 'customize_register', function( $wp_customize ) {
    $section = $wp_customize->get_section( 'menu_locations' );
    $section->description .= "<p>Custom HTML added.</p>";
}, 12 );

The priority of 12 is used because \WP_Customize_Nav_Menus::customize_register() happens at priority 11, and this is where the section is added.