The end date of the step is automatically specified with the current date when you switch the line status from In progress to Completed (by clicking Complete from the Actions icon at the beginning of the line). This date can be modified.
You can also directly enter an end date. When a step has a dependency link with a parent step, it is possible to manually enter an end date or to assign one via the Completed action only if the status of the parent step is Completed.
Entering an end date:
This action also automatically switches the tracking status to Completed, when all the mandatory steps have the Completed status.
When the step status is Completed, you can switch the status again to In progress by clicking Open from the Actions icon.