The outputs from a schedule model are schedule presentations. The project schedule is an output of a schedule model that presents linked activities with planned dates, durations, milestones, and resources. At a minimum, the project schedule includes a planned start date and planned finish date for each activity. If resource planning is done at an early stage, then the project schedule remains preliminary until resource assignments have been confirmed and scheduled start and finish dates are established. This process usually occurs no later than the completion of the project management plan. A target project schedule model may also be developed with a defined target start and target finish for each activity. The project schedule presentation may be presented in summary form, sometimes referred to as the master schedule or milestone schedule, or presented in detail.