That's not possible.
However, you could have a hikashop module listing your products as a list with the same styles as your menus displayed by the joomla menu module. That module would display for example all a link to all the products of your main category and that way, when you will add a new product, its link will be added automatically on the module display.
More info on products listing module here:
www.hikashop.com/fr/support/documentatio...html#products_module
