A system and method for creating, scheduling, and managing time slots for installation appointments. Embodiments of the present invention permit a trading partner to offer a customer the ability to schedule installation of cable services on-line. A cable operator maintains an inventory of time slots. One or more time slots from the time slot inventory are offered to a customer based on ordering information received from the customer. A customer selects a time slot from the one or more offered time slots. A cable operator then assigns an installation appointment to the customer within the time slot selected by the customer. A cable operator may also determine the status of the inventory of time slots (e.g., time slots allocated, time slots consumed, and time slots available) for a system, a location, or a trading partner.