Hi. I have read your project I am very interested. I have experience doing data entry in spreadsheet of Excel, organizing the data according to the assigned category, be it dates, quantity, weight, number of products, budget, among others. I also make programs with VBA of Excel so I can execute actions in the calculation sheet in order to guide the user to verify if a product has run out, if a percentage is low or high, in others words, to make smart the spreadsheet. I hope to meet your expectations and help you with your project. regards.