gistfile1.php

<?php
/**
 * Create ACF setting page under Events CPT menu
 *
 * @since 1.0.0
 */
if ( function_exists( 'acf_add_options_sub_page' ) ){
	acf_add_options_sub_page(array(
		'title'      => 'Event Settings',
		'parent'     => 'edit.php?post_type=events',
		'capability' => 'manage_options'
	));
}