My b2evolution Version: 2.x

Im using b2evolution as a CMS, with several blogs.
Each blog as the main page (link in the menu ) of each topic.

Two questions:

------------------------------------------------------------------------------------------
1. I would get both the main category and sub-category rendered by the,
"Universal Item list" or other widget as headlines in the "sidebar" and
under each subcategory I got each page-title as a menu link.
------------------------------------------------------------------------------------------

EXAMPEL OF CATEGORY STRUCTURE WITH SUB CATEGORIES

HORSES
> Isclandic (2 pages)
> mustang (3 pages)
> English Full Blood (1 page)

CATS
> Siamese (3 pages)
> Norwegian Forest Cat (3 pages)

__How I what it renderd in the "sidebar"____
(fake links)

HORSES
Isclandic
origin
history

Mustang
origin
history
today

English Full Blood
today

CATS
Siamese
Egypt
Temple cat
Cleopatras cat

Norwegian Forest Cat
the quiet cat
not for cities
origin

------------------------------------------------------------------------------------------
2. I would like to chose one category to show.
------------------------------------------------------------------------------------------

SAME STRUCTURE

HORSES
> Isclandic (2 pages)
> mustang (3 pages)
> English Full Blood (1 page)

CATS
> Siamese (3 pages)
> Norwegian Forest Cat (3 pages)

__How I what it renderd in the "sidebar"____
(fake links)

Mustang
origin
history
today

*edit
Multiple links to test.tld removed
¥