Using the custom post type you will notice the page where you edit or add a new post only has the bare minimum of panels.  But what happens if I want to add a specific excerpt???

Easy 🙂 use the following code and add it to your functions file.

add_post_type_support( '[your custom post type name', 'excerpt' );

Im not quite sure what the other panels are called. When I find out I will reply to this post with a list.