Tips on Customizing Contact Form Query

How to Hide Contact Form Query Admin Menus

function plt_hide_contact_form_query_menus() {
	//Hide the "Contact" menu.
	//Hide the "Contact → Messages" menu.
	remove_submenu_page('stcfq_messages', 'stcfq_messages');
	//Hide the "Contact → Settings" menu.
	remove_submenu_page('stcfq_messages', 'stcfq_settings');

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

Where do I put this code?

How to Hide the "Contact Form Latest Messages" Dashboard Widget

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

	//Remove the "Contact Form Latest Messages" widget.
	remove_meta_box('stcfq_latest_messages', 'dashboard', 'normal');

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