CODE EXAMPLE FOR PHP

how to make custom sub menu admin wordpress dev

function wpdocs_register_my_custom_submenu_page() {
	add_submenu_page(
		'edit.php',
		'Profil',
		'Profil',
		'manage_options',
		'my-custom-submenu-page',
		'my_custom_submenu_page_callback',
	);
}
add_action('admin_menu', 'wpdocs_register_my_custom_submenu_page');