This tutorial demonstrates how to create a multi-pack bundle called ‘Basket of Apples’ using Bundle Kit. You may apply the same concept in creating other forms of multi-pack bundles.
First, create your dummy bundle product in Shopify.
→ Fill in the title, description, images accordingly.
→ Leave out the price, available inventory and weight - these will later be calculated and set by Bundle Kit.

Make sure that Track quantity is enabled.

Add a variant option called ‘Size’ (or however you’d like to name it) with option values: