Customizer Add New Panel

customizer-new-panel.php

<?php

add_action( 'customize_register', 'bt_register_theme_customizer', 20 );
/**
 * Add new panel
 * Register for the Customizer
 * @since 1.0.0
 */
function bt_register_theme_customizer( $wp_customize ) {

	global $wp_customize;


/**
 * Create custom panel
 * Create Custom Section
 * Add setting
 * Add control
 * Also can be done with FLCustomizer::add_panel - see example commented further down
 * @since 1.0.0
 */
	// Add Panel
	$wp_customize->add_panel( 'featured_images', array(
		'priority'       => 70,
		'theme_supports' => '',
		'title'          => __( 'Featured Images', 'beavertron' ),
		'description'    => __( 'Set background images for certain widgets.', 'beavertron' ),
	) );

	// Add Featured Image for Hero Widget
	// Add section.
	$wp_customize->add_section( 'hero_background' , array(
		'title'      => __( 'Hero Background','beavertron' ),
		'panel'      => 'featured_images',
		'priority'   => 20,
	) );

	// Add setting.
	$wp_customize->add_setting( 'hero_bg', array(
			//'default'     => get_stylesheet_directory_uri() . '/images/hero-bg.jpg',
	) );

	// Add control.
	$wp_customize->add_control( new WP_Customize_Image_Control(
		$wp_customize, 'hero_background_image', array(
			'label'      => __( 'Add Hero Background Here, the width should be approx 1400px', 'beavertron' ),
			'section'    => 'hero_background',
			'settings'   => 'hero_bg',
			)
	) );

}