I need to change tax rate from 19% to 7% for more than 500 existing products. I am looking for a way not to do this manually and found "Addons: Attribute tax" https://www.webdesigner-profi.de/joomla-webdesign/shop/addons/attribute-tax.html?lang=de.
However looking at the screenshot I'm not sure if this addon solves the problem not having to edit every single product? Could you verify and/or explain another way to change attributes in bulk?
Thanks and best