It is possible for a user to add a subtask to a task. Typically, you use a subtask to track an external or off-line activity that must be completed before you can complete a task.
To define a subtask:
- Go to Tasks.
- Click To do.
- Select a task.
- Click Add subtask.
- Assign the subtask to a user.
- Click Add. The subtask is displayed in the To do filter.