I split your post into a new thread as it wasn't directly related to the thread it was in.
By default, the Featured Products Content record shows products from the category containing the most products. If you click the "Source" button for the content field on that Content record, you'll find this by default:
PHP Code:
[php <?php print sc_featured_products_content(); ?> /]
If you want to specify what category to use, pass a category record number as the first parameter:
PHP Code:
[php <?php print sc_featured_products_content(85); ?> /]
If you also want to control the number of products that are shown, pass that number as the 2nd parameter:
PHP Code:
[php <?php print sc_featured_products_content(85,8); ?> /]