PMA’s Wayne Beauregard discusses how to create, maintain, and assign baseline schedules in Primavera P6. A baseline schedule is a copy of your current schedule taken at a point in time. In construction, you typically create a baseline at the point in the project when you need a benchmark for future comparison or progress or to perform what-if scenarios. A common use is to baseline the initial or contract schedule to measure performance as the project progresses. Although many baseline schedules can be created only two can be used at a time for comparison.