How do I create a specific sort filter in a product category? For example in the category of battery screwdrivers to create a classification filter per power (12V, 18V, 20V) and to appear only in the specific category of products and not in the whole store.
You need to create a product attribute and assign to the products accordingly.
Then you set the sidebar and add WoodMart filter widget, you will find the option to chose the category you want this attribute to appear. You can find more options here: https://xtemos.com/docs/woodmart/widgets/