Task cards are used to track the tasks required to complete stories. To add a task to a story, click on the Tasks tab on the story card. The format is similar to the Story Card except hours are used instead of points. There is also the ability to track actual time spent on a task. The hours estimated and the hours remaining are reflected in the sprint and story burndown charts.
There are three types of tasks available from the drop down menu:
Adding Tasks to a Story
Updating Tasks on the Teamboard