How to set up product filtering by attribute in Magento?

Question

Magento

Hello. I have the Magento engine. There was a need to create a global filtering by product attribute. There are several categories, they have subcategories with products, each product has an attribute - manufacturer. How can I make it so that when clicking on a manufacturer in the front-end, a page opens with all the products of this manufacturer, regardless of which group they are in?

Answer 1

Googled the phrase "magento shop by brand free":
https://www.aitoc.com/en/magentomods_shop_by_brand...
https://www.magentocommerce.com/magento-connect/at...
https://www .magentocommerce.com/magento-connect/sh...

Answer 2

and from free options to an already filled catalog?