Bookable products do not have Inventory section

When using the Woocommerce Bookings plugin to make a “Bookable product,” the product does not have an “Inventory” section so the field for editing the GTIN does not appear when editing the product.

The plugin in question is here: https://woocommerce.com/products/woocommerce-bookings/

I suppose it does not make sense for bookable products to have inventory per se, so maybe it does not make sense for them to have a GTIN. However, it would still be nice to be able to avoid the Google Search Console warning for these products.

Would it be possible to make the GTIN editable for product types which do not have inventory?

Thanks.