I'm not sure that we need to change anything here. Imagine a product that has several properties such as parquet. It can be made from different wood species and also different paint color and type of varnish (glossy and matte). you
specify the name of the product - a parquet. Options (attributes) - wood, the color and type of paint.
The buyer chooses the three properties of multiselectbox simultaneously showed the number of goods (in this example, in square meters).
In order to buy the same product with a different set of attributes, the buyer need to specify them twice. To do this, it can add to cart and item by clicking on it in the list to select other options, and add it a second time. Most of all, we think about how to make this process even more convenient.