P6 Professional automatically synchronizes the duration, labor/ nonlabor units, and resource units/time for activities so that the following equation is always true for each activity:
Duration = Units ¸ (Resource Units ¸ Time)
However, since three variables are involved (duration, units, and resource units/time), when you change the value of one variable, P6 Professional must alter the value of a second to balance the equation. The Duration Type setting for an activity allows you to control how P6 Professional synchronizes these variables when any one of the equation's variables is changed.
The following table lists the value that is automatically changed by P6 Professional to synchronize the variables whenever the value of one of the duration type variables is changed.
Activity duration type | When you change units, this value changes... | When you change duration, this value changes... | When you change units/time, this value changes... | When you add a resource and there are no budgeted or planned units, this value changes... | When you add additional resources, this value changes... |
---|---|---|---|---|---|
Fixed units/time | Duration | Units | Duration | Units | Duration |
Fixed Duration & units/time | Units/Time | Units | Units | Units | Units |
Fixed units | Duration | Units/Time | Duration | Units | Duration |
Fixed Duration & units | Units/Time | Units/Time | Units | Units | Units/Time of each resource |