Warning
Once an Actual Start is entered, that date is anchored to the task and no other scheduling constraints can move that task.
The Actual Start can’t be changed when the % Completed (or Completed Duration) is greater than zero.
Log in to the HTML5 client.
Select the Projects Center workspace and open the Project Card.
Select the Gantt tab.
Select the task you want to track.
In the Task panel, select the Task Form tab ().
In the Tracking section, select a date in the Actual Start field.
Click on the Cmd () gear button of the task you want to track.
Select the Edit Task details command to open the Task Details dialog box.
In the Definition folder, Tracking section, select a date in the Actual Start field.