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Understanding Working Tasks

A Working Task is any task that does not have children or subtasks of its own.

This is an important distinction because it is possible for children tasks to have children tasks of their own. Working tasks are the only tasks that can be updated and have hours recorded toward them. Parent tasks (or non-working tasks) cannot be updated directly, but are updated through their children. For example, a parent task's percent complete is determined by aggregating the percent complete of its children.