[TYPO3-ttnews] News categories and permissions

[Tony P]

I'm new to TYPO3 and I'm struggling a bit with tt_news.

On my site the main BE user group has access to update all pages.
There are several minor BE groups who can only update their own page 
(and subpages).

What I want to do is this:

* allow the main group to add "general" news to the main News page
* allow each minor group to add news to their own news page
* have a global news page that shows all news (including from the minor 
groups) and allow visitors to select the categories they want to view
* main group can add news to any category
* minor groups can add news to only their own categories
* any news item can be either public or restricted to a FE user group

I'd really appreciate some tips or hints on how to do this. Thanks.

Tony P