Add Setting page for ACF

acf_setting_page.php

<?php

/**
 * Add Setting page for ACF
 *
 * @return void
 */
function buntywp_acf_setting_pages() {

	// Bail, if anything goes wrong.
	if ( ! function_exists( 'acf_add_options_sub_page' ) ) {
		return;
	}

	acf_add_options_sub_page(
		array(
			'page_title'  => __( 'Bunty ACF Settings', 'default' ),
			'menu_title'  => __( 'Bunty ACF Settings', 'default' ),
			'parent_slug' => 'options-general.php',
		)
	);

}

// Add admin menu for custom ACF setting.
add_action( 'admin_menu', 'buntywp_acf_setting_pages', 90 );