The blog settings is where the magic happens. With zora you can show all posts across all your blogs using the featured blog section and show every post a contributor has contributed to. To create this experience assign the blogs you want zora to know.
Blogs list
Include a list of blog handles comma separated for every blog you want zora to look out for. By default zora will look for the news blog. To consider other blogs you will need to include them. If a blog is not included unexpected behavior like missing posts from contributor profiles might happen.
You can also disable the default author from all blogs. This feature is useful if you're using multi-authoring or just don't want your default author/user to show.