Tips on Customizing WP Customer Reviews

How to Hide WP Customer Reviews Admin Menus

function plt_hide_wp_customer_reviews_menus() {
	//Hide the "Reviews" menu.
	//Hide the "Reviews → All Reviews" menu.
	remove_submenu_page('wpcr3_view_reviews', 'edit.php?post_type=wpcr3_review');
	//Hide the "Reviews → Plugin Settings" menu.
	remove_submenu_page('wpcr3_view_reviews', 'wpcr3_options');

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

Where do I put this code?

How to Hide the "WP Customer Reviews" Meta Box

function plt_hide_wp_customer_reviews_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {

	//Hide the "WP Customer Reviews" meta box.
	remove_meta_box('wpcr3-meta-box', $screen->id, 'normal');

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