Use the Time Spent property to keep track of how long each task took.

Enter in the hours and minutes you've spent working on this task. Click the 'Add Time' button and you will be prompted to enter the number of minutes you want to add to the Time Spent. The number of minutes you enter is added to the total.

The Start/Stop Timer gives you an easy way to track how long you have been working on a task.

Click 'Start' and the timer starts. If you haven't finished the task and need to step away or go look at annother task, hit the Save Button and the next time you edit this task, it will remember when you previously started the time and it will still be running.