Display product variations as dropdown

Hi, I want to change the way the variations appear on the front-end. At the moment they show up as big blocks with an image.
I want to change that to make it appear like shopify, to just select the variations individually like size and color. (screenshot attached)

UPDATE:

In my product details page when setting up the variations, there is no field to select how th variations should display in the front end.

Screenshot attached.