Tips on Customizing Dynamic Front-End Heartbeat Control

How to Hide the "DFEHC" Admin Menu

function plt_hide_dynamic_front_end_heartbeat_control_menus() {
	//Hide the "Settings → DFEHC" menu.
	remove_submenu_page('options-general.php', 'dfehc_plugin');
}

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

Where do I put this code?

How to Hide the "Dynamic Heartbeat Health Check" Dashboard Widget

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

	//Remove the "Dynamic Heartbeat Health Check" widget.
	remove_meta_box('heartbeat_health_dashboard_widget', 'dashboard', 'normal');
}

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