How to set Free shipping for chosen category only?

-- HikaShop version -- : 4.0.2
-- Joomla version -- : 3.9.2
-- PHP version -- : 7.2
-- Browser(s) name and version -- : firefox

In my shop, I have some typical items, like t-shirts, caps, bottles.
But I have also digital products, for this category I want to have free shipping only. Those are download files, so no shipping. How to set it, please share a link to documentation or video

Merci / Thanks

Hi,

Don't set a weight for the digital products, and make sure that the "force shipping regardless of weight" setting of your HikaShop configuration is turned off.
That way, the shipping will only apply when you have products with a weight in your cart.