In case that you have received price list from your supplier that has different prices for “Supplement for half board” for adults and for children (0-18), you can do that in this way:

  1. Edit accommodation or a tour
  2. Click Price list tab
  3. Click Additional services 2nd level tab
  4. In the Options field select Price list schedule or add a new one by clicking the Plus button next to it
  5. Select Currency
  6. Find Additional services field and click Add
  7. New additional service with 1 price list row will be added
  8. Choose “Supplement for half board” in Service drop down list or add it by clicking the Plus button next to it, if not listed
  9. Select Net Payment method
  10. Select Selling payment method
  11. Enter 18 – 999 in Valid for ages (from-to) field
  12. Enter net prices and margins to calculate selling prices
  13. Add another service by clicking Add button in Additional services field
  14. New additional service with 1 price list row will be added
  15. Choose “Supplement for half board for children” in Service drop down list or add it by clicking the Plus button next to it, if not listed
    NOTE: You have to choose different service because adding 2 same services to a price list is considered error. So you have to create another additional service that has different name, and add it to price list.
  16. Enter 0 – 18 in Valid for ages (from-to) field
  17. Enter net prices and margins to calculate selling prices
  18. Click OK to save changes

You have defined 2 additional services “Supplement for half board” and “Supplement for half board for children”, and so price calculation will be dependent on person’s birth date.