In the task list configuration, a list with all existing task lists (for different kinds of test scenarios) is shown.
The currently opened task list is called Phone service. It exists of three different tasks as listed in the table in the lower part of the window. For each task, you can enter a name and a description.
As you can see, adding task number four is very easy.
With the Up and Down buttons you can change the order of the tasks.

Of course you can print the task list.

To start a task, just click on the button The button turns green, indicating that this is the current task the participant is working on. To stop the task, click the button again. It turns blue. The task is done and the duration is measured. To rate the task, choose an entry from the pull down menu.
Of course you can do the tasks in a different order than scheduled, skip tasks and perform the same task several times during a test session.

Take a look how the task rating works in detail.