Group Products Instructions
To Group Products:
1. Create a collection with title is the product title you want to display.
2. Collection description will be the "Grouped Product's fake option name". In the demos, I used "Colour" and "Length".
3. Products in this collection will be grouped together. You can create an auto collection with condition(s) or manual collection and add products to it.
In the demos, I simply created auto collections with condition: Product title contains ...