Tips on Customizing Request Form for Zendesk

How to Hide the "Zendesk Form" Admin Menu

function plt_hide_zendesk_request_form_menus() {
	//Hide the "Settings → Zendesk Form" menu.
	remove_submenu_page('options-general.php', 'zendesk-request-form');
}

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

Where do I put this code?

How to Hide the "Settings" Meta Box

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

	//Hide the "Settings" meta box.
	remove_meta_box('pipdig_zrf_meta', $screen->id, 'normal');
}

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