posts in another section (or page)?

Create a category for this section. And then hard code a link into your navigation for the section. For example, a category called “News”. Create it, get the id# in your site admin an use it in the nav like so: <a href="?cat=4" title="news">News</a>

but will the “news” articles come up on the main page?

Sounds like the SideBlog plugin might do what you need.
https://katesgasis.com/2006/05/02/sideblog-plugin-v30/

You can exlude any category from the main page (no need for sideblog ?? > https://ryowebsite.com/?p=46