hide the shipping field

Hi, I need some help to hide the shipping field when local pick up is select. I use this snippet to hide the shipping field.
https://businessbloomer.com/woocommerce-hide-shipping-local-pickup-selected/
It works on original woocommerce form_checkout.php which col2 is the shipping field. or I can replace with .woocommerce_shipping_field.
But I can’t figured out which should I replace the shipping field on this multi checkout plugin. Anyone can tell me how to achieve this to hide the shipping when shipping method is local pick. Thanks for any help.