How to Hide Convoworks WP Admin Menus

function plt_hide_convoworks_wp_menus() {
	//Hide "Convoworks WP".
	remove_menu_page('convo-plugin');
	//Hide "Convoworks WP → Convoworks WP".
	remove_submenu_page('convo-plugin', 'convo-plugin');
	//Hide "Convoworks WP → Settings".
	remove_submenu_page('convo-plugin', 'convo-settings');
	//Hide "Convoworks WP → Getting Started".
	remove_submenu_page('convo-plugin', 'convo-getting-started');
	//Hide "Convoworks WP → Request Log".
	remove_submenu_page('convo-plugin', 'convo-service-conversation-request-log');
}

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

Where do I put this code?