GDPR options in checkout (checkbox) available?

Hello,

I read this announcement from Woocommerce: https://woocommerce.wordpress.com/2018/05/04/woocommerce-3-4-gdpr-features/
Please skip to: “Checkout page display options”

There’s a screenshot with a checkbox in the checkout. They say that you can control it via the customizer. Unfortunately I can’t see an option for a checkbox.

Does anybody know where I can define a checkbox in the checkout? Does it depend on the theme?

PS: I updated all components (WordPress, Woocommerce, Woodmart Theme, Germanized Pro) but can’t find that option.
PPS: I know that this is not really theme related but you guys here have always a helpful answer 🙂

Greets,
Thomas