Simply input your referral code in the promotional code box on the booking reservation page, before you click “confirm booking”. If you have any available credits, one will be applied to your booking request. 

If you're the referee, ensure you enter the referral code sent to you when you signed up to the endota booking platform:

If you have entered information in this field, your referral credit will be automatically applied to your booking. If this isn't the case, simply use the referral code already shared with you in the coupon code box.