Interruptible and uninterruptible tasks
Interruptible and uninterruptible work records are scheduled differently in the graphical view.
If no calendar or shift information is defined on the schedule, there is no distinction between interruptible and uninterruptible work in the graphical view.
Interruptible work
Interruptible work can be performed during work hours only. When interruptible work appears for the first time in the graphical view, it is scheduled for the first available work time in the calendar. The duration of the work is added to the start date and time to arrive at the work end date and time. If any portion of the work occurs during nonwork time, the unfinished portion is moved forward to the next work time. The nonwork portion of the work is shaded differently in the graphical view, indicating that no work is being performed.
The duration for an interruptible task is not always the difference between the start date and time and end date and time. The duration is the sum of the work hours between the start and end date and time. For example, a task starts on 06/01/2010, at 7:00 AM and ends on 06/02/2010, at 9:00 AM. Work time is between 7:00 AM and 3:00 PM. The duration is 10 hours (eight hours of work time on June 1, and two hours on June 2).
Uninterruptible work
Uninterruptible work can be performed at any time, regardless of work hours. The work is completed without interruption. When uninterruptible work appears for the first time in the graphical view, it is scheduled for the first available time on the schedule. The work continues, uninterrupted, until finished. The duration of the work is always the difference between the start date and time, and end date and time.