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Task Duration

Duration is the length of time, in business days, a task requires from conception to completion, including the start and finish dates. You can change the task duration using different ways. You can edit it directly on the desired position on the timescale in a spreadsheet view, such as the Gantt view, by clicking and dragging the left or right side of the Gantt bar to the desired position on the timescale. You can also use the General tab on the Task Properties dialog to edit task duration.

When you add tasks to a project, the task's default start date is today's date, or the next working date after today's date if today is a holiday or a non-work day.

The maximum duration you can define can extend from present day to June 3, 2079. The duration for variable-duration tasks is automatically calculated. For fixed-duration tasks, the application automatically calculates the task's finish date. If the task is fixed and you change the finish date, the duration is automatically calculated.

During autoschedule, the duration is not changed for fixed-duration tasks, except when you enter an autoschedule start date that is greater than the task finish date. In this case, ETC is moved for resources and roles to start from the autoschedule start date and is spread to the task finish date, depending on the loading pattern. If the autoschedule start date is greater than the task finish date, then the finish date is moved to the autoschedule start date, and all ETC is placed on that date.

To define a task's duration. right-click the task you want to define duration, and click Modify in the shortcut menu. Complete the Duration field and the Fixed check box.

More information:

Task Priority

Define the General Properties

Establishing Task and Resource Constraints

Recalculate Task Duration

Define Autoschedule Parameters