The document provides step-by-step instructions for property managers to use an online property management system to manage reservations, maintain live inventory of rooms, check guests in and out, cancel bookings, view reports, and process additional billings and payments. It outlines how to update room inventory, book and manage reservations, check guests in and out, view occupancy summaries and guest details, and process additional services and payments. The system allows property managers to efficiently manage all aspects of reservations, inventory, guest stays, and billing online through a centralized portal.