Tips on Customizing Robin Image Optimizer – Unlimited Image Optimization & WebP Converter

How to Hide Robin image optimizer Admin Menus

function plt_hide_robin_image_optimizer_menus() {
	//Hide "Media → Other Media".
	remove_submenu_page('upload.php', 'rio-custom-media');
	//Hide "Custom Folders".
	remove_menu_page('io_folders_statistic-robin-image-optimizer');

	//Hide "Robin Image Optimizer".
	remove_menu_page('rio_general-robin-image-optimizer');
	//Hide "Robin Image Optimizer → Optimize".
	remove_submenu_page('rio_general-robin-image-optimizer', 'rio_general-robin-image-optimizer');
	//Hide "Robin Image Optimizer → Settings".
	remove_submenu_page('rio_general-robin-image-optimizer', 'rio_settings-robin-image-optimizer');
	//Hide "Robin Image Optimizer → License".
	remove_submenu_page('rio_general-robin-image-optimizer', 'wrio_license');
	//Hide "Robin Image Optimizer → About Us".
	remove_submenu_page('rio_general-robin-image-optimizer', 'ti-about-robin_image_optimizer');
}

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

Where do I put this code?

How to Hide the "WordPress Guides/Tutorials" Dashboard Widget

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

	//Remove the "WordPress Guides/Tutorials" widget.
	remove_meta_box('themeisle', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_robin_image_optimizer_dashboard_widgets', 20);