Listing pages

Hi everyone,
there is a way to show all the pages related to a category (or website root)?

E.g. My Site Structure is:
HOME
HISTORY
EXHIBITIONS
- exhibition page 1 (text, gallery...)
- exhibition page 2
ARTISTS
- artist 1 (sub-menu on the left)
- artist 2 (sub-menu on the left)
- artist 3 (sub-menu on the left)
ABOUT US
CONTACT
- website manager (sub-menu on the left)
- gallery manager (sub-menu on the left)
- artists (sub-menu on the left)

When the user click on the "exhibition" menu item, I would like to list all the exhibition pages in the main area (not on the left like the other sub-menus). Thus I used the Custom Navigation Module (with new layout page and new website root), but every time I add a page under the exhibition item, then I must to go to Custom Navigation Module section and tick the new created page.

Could you suggest a better way to implement my solution?

Thanks

Yes, you can do this by creating a second "Navigation menu" module (not custom navigation module). Then change the settings in your start and stop levels.

Start Level - Enter a value greater than 0 to show only submenu items.
Stop Level - Enter a value greater than 0 to limit the nesting level of the menu.

Then add your new Navigation module to your #main articles