Bill Erickson

The Genesis Grid plugin was design to allow users of the Genesis theme to easily display their posts in a grid format.
“Features” are full-width posts at the top of the listing. “Teasers” are the posts broken into columns. You can set the number of Features and Teasers for both the homepage and inner pages, and how many columns the teasers are broken into.
You can also specify the image sizes used for Features and Teasers. I recommend setting Features for Large, and Teasers for Medium. Then go to Settings > Reading and set the dimensions of those images as needed. If you have already uploaded images, use the Regenerate Thumbnails plugin to rebuild the thumbnails at these dimensions. If images aren’t showing up, make sure you have “Include featured images” checked in Genesis > Theme Settings > Content Archives
Finally, you can specify where the grid loop is used by checking Home, Category Archives, Tag Archives, Taxonomy Archives, Author Archives, and/or Search Results. See the Developers section for more fine-grained control.
<a href="https://github.com/billerickson/Genesis-Grid/wiki" rel="nofollow ugc">Documentation</a>
No support will be provided by the developer

Genesis Grid

Customize your archive pages in Genesis to use a grid layout. Requires the Genesis theme.

Michael Torbert

Once activated, only posts from the current category are displayed in your loop (no posts from sub cats). 
That’s all it does. No options. If you find you need options, let me know and I’ll build them into it.
As of 0.4 I remove the filter after the main query is built so that it doesn’t interfere with widgets. 
If you have a custom query or call wp_query on a category archive template, you’ll need to add and remove the filters before and after your query. Below is an example of how to do this if you use wp_query. Again, this is not necessary unless you have modified queries in a template file.
<pre><code>add_filter( 'posts_where', 'ft_nscp_mod_where' );
query_posts( array( 'your-custom' => 'args' ) );
remove_filter( 'posts_where', 'ft_nscp_mod_where' );
</code></pre>
Its important that you remove what you add.

No Sub-Category Posts in Loops

Once activated, only posts from the current category are displayed in your loop (no posts from sub cats).

Genesis Grid vs No Sub-Category Posts in Loops