How to use the subtask widget
To use the subtask widget, or any other widget for that matter, you must be editing a template. Do this by clicking the cog next to a template’s name in your dashboard, then on “Edit this template”.
Note that you need to be an Admin or a Member with editing permission, to be able to edit templates.
Navigate to the task you want to add a subtask to, then cast your eye to the right-hand widget menu.
Add a subtask by clicking the subtask name, or drag and drop it into place.
You can add and delete tasks in the subtask much like regular tasks – hit your “Enter” key to add another task to the subtask, and hit “Backspace” key on an empty task to delete it.