metabox-and-options.php

<?php if ( ! defined( 'ABSPATH' ) ) { die; } // Cannot access pages directly.

function stock_theme_metabox($options){
	$options      = array(); // remove old options

	$options[]    = array(
	  'id'        => 'stock_page_options',
	  'title'     => esc_html__('Page Options', 'stock-theme'),
	  'post_type' => 'page',
	  'context'   => 'normal',
	  'priority'  => 'high',
	  'sections'  => array(

	    // begin: a section
	    array(
	      'name'  => 'stock_page_options_meta',
	      'icon'  => 'fa fa-cog',

	      // begin: fields
	      'fields' => array(

	        // begin: a field
	        array(
	          'id'    => 'enable_title',
	          'type'  => 'switcher',
	          'title' => esc_html__('Enable title?', 'stock-theme'),
	          'default' => true,
	          'desc' => esc_html__('If you want to enable title, select yes.', 'stock-theme')
	        )

	      ), // end: fields
	    ), // end: a section

	  ),
	);

  return $options;
}
add_filter( 'cs_metabox_options', 'stock_theme_metabox' );