How to use discount code

My friend used a refferal link i’ve sent to him, i’ve received and email with discount code but i have no idea how to use it, don’t see any input to put it in while ordering. Where is it? :slight_smile:

Proceed all the way to ‘Secure Checkout’
Then expand the drop down menu ‘Show Order Summary’ and a discount code box will show at the bottom of your order