Hi there,
I am looking for some advices in modifying the WordPress/Woocommerce plugin "Chained Products" (https://woocommerce.com/products/chained-products/) so that I control the chained products from the PHP code rather than setting up each chained product on each product page. It has to be a very simple setup. Just one different chained product based on the category. That's easy.
The tricky part is figuring out what action/filter I should hook into. Any suggestions or experiences?