You can record statistics about a task, such as time spent completing the task, billable time, contacts, and so on, for your own records or for reference when sharing tasks with your coworkers. This feature is particularly helpful when you assign tasks to others; you can keep track of assigned tasks and find out when they're completed.
To enter statistics about a task, open any task in the task list and click the Details tab. Figure 16.4 shows a completed Details tab for a sample task.