Tips on Customizing Meteomatics Weather Widget

How to Hide Meteomatics Weather Widget Admin Menus

function plt_hide_meteomatics_weather_widget_menus() {
	//Hide the "Meteomatics Weather Widget" menu.
	remove_menu_page('meteomatics-settings');
	//Hide the "Meteomatics Weather Widget → Widgets" menu.
	remove_submenu_page('meteomatics-settings', 'edit.php?post_type=meteomatics_widget');
}

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

Where do I put this code?

How to Hide the "Meteomatics Widget Info" Meta Box

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

	//Hide the "Meteomatics Widget Info" meta box.
	remove_meta_box('meteomatics_widget_info', $screen->id, 'normal');
}

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