The News menu in your B2B Wave portal allows you to create and edit individual news articles for your customers.
Recent news posts will be shown toward the bottom of your homepage under "Latest News". News posts primarily differ from Pages because they are shown on the homepage rather than in the navigation bar or footer. You can read more about this here.
When editing a News post, be aware that the Title, Summary and Date will be shown on your homepage, while the Content will only be shown once a customer clicks on the actual post. Posts are organised by date, with the most recent posts showing first. If a post is marked as important, it will have a star next to it on your homepage.
Now, press "Save" and you're all done! News posts will now appear on your storefront homepage as shown below.