Question: 

For the products to look up, the extension only shows items that are visible in frontend. On our catalog, we set only configurable products visible in the frontend, and all simple products are not visible individually.

Is it possible to allow customers to add products which are "Not visible individually" ?

Answer: 


You could allow your Not Visible Individually products searchable on Fast Order form as following suggestion:


- Access file: Model/Search/Save.php

- Delete line:

->setVisibility($this->productVisibility->getVisibleInSiteIds())


For more information about product, please refer Magento 2 Wholesale Fast Order page.

If you need any further assistance, please feel free to contact us.

Please visit our site for more useful Magento 2 Extensions: https://bsscommerce.com/magento-2-extensions.html