Yes, according to your Theme you are using, hover over the Task app, and press Menu to MOVE, and drop it on the folder icon, or drop it on the top set of the applications.
If tasks are really important to you, than ToDoMatrix is a better option than PocketDay in my opinion although ToDoMatrix don't show you the tasks op your wasted screen space like PocketDay does.
With ToDoMatrix you can set up tasks (to do's) with very unique alerting capabilities. If you're a tasks-freak, ToDoMatrix will make you very happy.