I've been looking for a solution for this question. I found some information, but I don't know the exact steps for programming it.
I've created attributes: hidraulics, electrics, battery, lamps. These attributes have also other extra attributes inside, and more than one category can have products from each attribute.
What I need is filter by attribute. If I click on a button I created, I need to filter by these four attributes (not the categories).
I've seen solutions, but I can't understand them. I would really appreciate some help on a specific instructions.
Thank you so much.