Creating subfolders under My Worklist




I would like to know whether it is possible to create subfolders under My Worklist in Form Manager (ver 7.0.1)?

We are trying to find a solution to the following scenario:

The user has lots of forms under his worklist which he is finding messy to manage. He wants some subfolders to be created under his worklist and would like the forms to be put in these subfolders depending on the usage of the form (thru the workflow which routes the form to him).

Can someone let me know if this is achievable?