Normal process of changing the selling and purchasing price is to change them in the pop up window. But we want to change the selling and the purchasing prices at the same windows of making sale and purchases, rather than go to a separate pop up widow through a edit button. How can we do a such a modification ? Then we can edit the sale price at the same window of POS or add sales, and the purchasing price at the same window of add purchases. No need to go for a edit button. Can you guide us for that ?