I want a column in the quotation specifically for the purchase price, so that I can enter the purchase price for each item. Additionally, I need another column for the margin percentage to help me calculate the selling price. It is also essential that when I print or generate a PDF from the studio, the purchase price and margin percentage remain hidden, and I receive the total purchase price and selling price at the bottom. Is this possible? I attempted to do this in the quotation line management in the studio, but I encountered an alert message and the screen became unresponsive.