Tips on Customizing 404 to 301 – Redirect Manager, 301 Redirection, 404 Error Logs & 404 Monitoring

How to Hide 404 to 301 - Redirect Manager, 301 Redirection, 404 Error Logs & 404 Monitoring Admin Menus

function plt_hide_404_to_301_menus() {
	//Hide "Tools → Scheduled Actions".
	remove_submenu_page('tools.php', 'action-scheduler');

	//Hide "404 to 301".
	remove_menu_page('404-to-301-redirects');
	//Hide "404 to 301 → Redirects".
	remove_submenu_page('404-to-301-redirects', '404-to-301-redirects');
	//Hide "404 to 301 → 404 Logs".
	remove_submenu_page('404-to-301-redirects', '404-to-301-logs');
	//Hide "404 to 301 → Settings".
	remove_submenu_page('404-to-301-redirects', '404-to-301-settings');
	//Hide "404 to 301 → SEO".
	remove_submenu_page('404-to-301-redirects', '404-to-301-aioseo');
	//Hide "404 to 301 → About Us".
	remove_submenu_page('404-to-301-redirects', '404-to-301-about');
}

add_action('admin_menu', 'plt_hide_404_to_301_menus', 12);

Where do I put this code?

How to Hide the "404 to 301 — Recent 404s" Dashboard Widget

function plt_hide_404_to_301_dashboard_widgets() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Remove the "404 to 301 — Recent 404s" widget.
	remove_meta_box('d404_recent_404s', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_404_to_301_dashboard_widgets', 20);