Woocommerce - How to select multiple values ​​in attributes?

My first product type is a variable product with attributes. My second type of product is a multi-product box. Since I have no inventory, I thought the selection of products to enter into the drawer, I could set the attribute.

The problem is that on the product page, you can select one attribute at a time. I need a client to select five attributes at once!

How can I "allow" selection of multiple attributes?

thank