To set up discounts for clients, you need to 

  1. Create a separate pricing scheme that will contain discounted pricing
  2. Insert a promo code that will activate this pricing. This pricing will only work if the promo code is used by client when making a booking!
  3. Assign the pricing to the car of your choice, ideally at the top of the priorities (remember- it will only activate if promo code is inserted by client)