Thanks to this plugins you can:
set name for Latest News section
set link for news
set text for news
set display order for news
set background color for Latest News cell
set speed of news sliding
set unlimited news
set news for main forum page only or for all pages
set maximum width for Latest...
In addition to all other user group permissions for news tickers, you can also set which user groups can see navigation tab for news ticker:
So, easily set it to NO, for any group that you don't want to let them see that link in navbar.