Broadcast works best by displaying a featured page on the homepage, along with your latest posts from the blog.
To set your homepage content, create a new page in WordPress and add your content. Then navigate to Settings -> Reading. Set your homepage displays to static page and then choose a page for Homepage.
Settings -> Reading
your homepage displays
This page will now display on your homepage.
To change the number of blog posts displayed on the homepage, you can edit the number under Blog pages show at most. The default WordPress value for this field is 10. Broadcast works great with 2 or 3 posts on the homepage.
Blog pages show at most