How can I add a checkbox (confirmation of consent) on the cart page?

Site URL: https://www.valbanera.com/

Hello, 

In Spain we need to include a confirmation of consent: the “I agree with Terms and conditions” checkbox on the cart page before checkout.

Does any one knows how can I add a checkbox on the cart page?

Thanks a lot for your help!

Maribel

Thanks, Paul!

Can you pls show me an example of a custom checkout form with checkbox, pls? 

Many thanks!
Maribel

See Creating a custom checkout form.

Thanks a lot, Paul!