Booking management systems are complex, requiring attention to start dates/times and end date/times, which may cross timezones and be viewed in yet other timezones. Booking management also requires the evaluation of a resource or services current availability (are they busy at this time), maximum availability during a given period (can they do more than one thing at a single time), and general availability (are they even available to perform a service at a given time). Managing this for a business requires knowledge of all service and resource schedules. The booking engine created for https://velloe.com accomplishes this, and more, with the ability to notify business owners, resources and customers of new or upcoming bookings, as well as changes or cancellations, in real-time to administration consoles for managers and resources and to mobile devices, for resources and customers.