Is it possible to make product quantity selection a list in a WP theme?

Question

CMS

I want to buy a theme for WP. Everything suits, only I need to make sure that the goods are selected not in pieces, but in a list in grams (50g 100g, etc.) can this be done? and is it difficult?
organique.demo.proteusthemes.com
First experience on WP

Answer 1

This is a product property. It will be necessary to add the output of this property.