Tips on Customizing QR Code Composer – Dynamic QR Code Generator

How to Hide QR Code Composer Admin Menus

function plt_hide_qr_code_composer_menus() {
	//Hide "QR Composer".
	remove_menu_page('qr_composer');
	//Hide "QR Composer → QR Composer".
	remove_submenu_page('qr_composer', 'qr_composer');
	//Hide "QR Composer → Auto Generate QR Code".
	remove_submenu_page('qr_composer', 'admin.php?page=qr_composer#tab2');
	//Hide "QR Composer → Custom QR Code".
	remove_submenu_page('qr_composer', 'admin.php?page=qr_composer#tab3');
	//Hide "QR Composer → vCard QR Code".
	remove_submenu_page('qr_composer', 'admin.php?page=qr_composer#tab4');
	//Hide "QR Composer → Integration".
	remove_submenu_page('qr_composer', 'admin.php?page=qr_composer#tab5');
	//Hide "QR Composer → Shortcode Generator(PRO)".
	remove_submenu_page('qr_composer', 'qrc_shortcode');
	//Hide "QR Composer → Order QR Code (PRO)".
	remove_submenu_page('qr_composer', 'qrc_ordermail');
	//Hide "QR Composer → Download Vcard (PRO)".
	remove_submenu_page('qr_composer', 'qrc_vcardlist');
	//Hide "QR Composer → Download QR Code(PRO)".
	remove_submenu_page('qr_composer', 'qrc_list_view');
	//Hide "QR Composer → Bulk Print (PRO)".
	remove_submenu_page('qr_composer', 'qrc_print_pdf');
	//Hide "QR Composer → Get PRO".
	remove_submenu_page('qr_composer', 'https://sharabindu.com/plugins/wordpress-qr-code-generator');
}

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

Where do I put this code?

How to Hide QR Code Composer Meta Boxes

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

	//Hide the "QR Code Composer" meta box.
	remove_meta_box('qrccompoer_metabox', $screen->id, 'advanced');
	//Hide the "vCard QR" meta box.
	remove_meta_box('vCardQR', $screen->id, 'normal');
}

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