I think it only shows if it is a booking category. For example, there are both dedicated and lock off 1 bedrooms at the BWV, but neither is a bookable category so it doesn't show on the reservation. (It may show on the screens MS uses, though. I really don't know). We just request a dedicated, sice that is what we prefer.
I think that info does show on BCV reservations, since the 3 types of 2 bedrooms are all bookable categories.