By default, the plugin allows adding multiple shipping addresses to the orders for all the products of your shop by enabling the related option from the plugin settings dashboard. Once enabled, you can choose whether to allow also guest users to set additional shipping addresses through the option Allow guest users.
If you wish to exclude certain products or categories from the multi-shipping feature, you can do it by adding them to the related lists available in the plugin dashboard.
Exclude categories
The plugin supports variable products and allows your users to add a different shipping address for each single product variation.