Tips on Customizing SmartLink Dynamic URLs

How to Hide SmartLink Dynamic URLs Admin Menus

function plt_hide_smartlink_dinamic_urls_menus() {
	//Hide the "Smartlink DU" menu.
	remove_menu_page('smartlink_admin');
	//Hide the "Smartlink DU → Smartlink DU" menu.
	remove_submenu_page('smartlink_admin', 'smartlink_admin');
	//Hide the "Smartlink DU → Settings" menu.
	remove_submenu_page('smartlink_admin', 'settings');
}

add_action('admin_menu', 'plt_hide_smartlink_dinamic_urls_menus', 11);

Where do I put this code?

How to Hide the "Smartlink Creator ~ Meta Box" Meta Box

function plt_hide_smartlink_dinamic_urls_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Smartlink Creator ~ Meta Box" meta box.
	remove_meta_box('smartlink-dynamic-urls', $screen->id, 'advanced');
}

add_action('add_meta_boxes', 'plt_hide_smartlink_dinamic_urls_metaboxes', 20);