I have seen this on the forums and it looks like others have found it difficult to implement.
As an example, my fathers restaurant is running a 20% discount off all food at present, as we run up to Christmas he will be running a 15% discount off all alcohol drinks, how can I apply this in SambaPOS ?
I have added a modifier Promo 20%, an Action and a Rule but they do not seem to take the 20% off the normal price. I was thinking about adding a promo portion on but this would have to be added to every food item.
Does anyone have any ideas ?