public function hook() {
		// Register the action for the Edit order screen.
		add_filter( 'woocommerce_order_actions', [ $this, 'add_single_order_action' ] );

		// Register the bulk action for the Orders screen.
		add_filter( 'bulk_actions-edit-shop_order', [ $this, 'add_bulk_order_action' ] );

		// Handler action for order edit screen.
		add_action( 'woocommerce_order_action_' . $this->action_slug, [ $this, 'regenerate_attendees' ] );

		// Handle bulk action for order list.
		add_filter( 'handle_bulk_actions-edit-shop_order', [ $this, 'bulk_handler_for_attendee_regeneration' ], 9, 3 );

		// Show bulk order update confirmation.
		add_action( 'admin_notices', [ $this, 'display_bulk_action_confirmation_notice' ] );
	}