May I request what guide you're adhering to? If the guidebook has requirements, it should indicate how to meet up with them. As already mentioned in various other answers, you can use Apple company's 'Amounts' to open Excel documents, but generating or changing Excel documents programatically will be a various story you might need to possess the suitable tools (SDKs etc.) installed to do that. I can educate myself Objective Chemical on the web and fixed 'compose Excel viewer' as my very first project.
