I've moved this to the Schedules forum...
Element schedules can present one line per element: wall, window, door, etc. - or can aggregate similar entries and subtotal.
Component schedules can give information on the constituent parts of element modeled using either composites or (complex) profiles.
You cannot add new categories of schedules to the project map, but you can create any number of schedules, and then organize them in whatever folders you desire in the view map.
HTH,
Karl