Can Anyone Help with a Pages Problem?

At the moment The Pages module world view does not contain the Categories list,  (in the left hand side menu) all though you can add  Pages to categories when creating one, seems a bit silly not to have them listed on the Page for people to easily browse.

I have tired with not much success in adding the Categories list to Pages world view as I really need the list there in my site.

Is there anyone who has attempted this and succeeded? Could really do with a few pointers.