If you ever find that a task isn't quite fitting in your hierarchy structure as you planned, it's easy to move it from one place to another.
Move in Task View
To move the task, click the button to the right of this bar and select the new parent Space, Project, and List for the task.
You can also move the task by clicking on the ellipses
... symbol within your task and selecting
Move with the Multitask Toolbar
While in List View, select one or more tasks that you would like to move to another Space. Then, click on the Move Tasks icon in the toolbar at the top of your screen. Choose a new Space, Project, and List for the tasks, and they'll be moved instantly!