Remaining Duration (Assignments)
Remaining Duration field
The remaining working time for the resource assignment on the activity, from the resource's remaining start date to the remaining finish date.
The remaining working time is calculated using the calendar determined by the activity type. Resource dependent activities use the resource's calendar; other activity types use the activity's calendar. Before the activity is started, the Remaining Duration is the same as the Planned Duration. After the activity is completed, the remaining duration is zero.