OK, I believe that I worked this out, as well. To resolve my issue, I edited includes/modules/pages/products_new/header_php.php (There is no override file - Please save a backup). Find this snippet of code:
PHP Code:
WHERE p.products_status = 1
and add the following underneath (26 being the number of the category being blocked):
PHP Code:
and p.master_categories_id != 26
and includes/modules/your_template/new_products.php. Find this snippet of code:
PHP Code:
where p.products_id = pd.products_id
and add the following underneath (26 being the number of the category being blocked):
PHP Code:
and p.master_categories_id != 26
I've found that you can also block the subcatagories by following the same procedure. Here I've also blocked sub cat 27:
PHP Code:
and p.master_categories_id != 26
and p.master_categories_id != 27