Hello,

Grouped Products is a product type bundled in WooCommerce and is more about product display.
Please check this documentation:
https://woocommerce.com/document/group-bundle-products-woocommerce/

If it does not help your requirements, You need to find a third party plugin to achieve more functionality that best suits you.
https://woocommerce.com/products/product-bundles/

Best Regards.