Hey guys, I have no interest or experience around window cleaning, however I do with I.T and I have been asked by someone I know to develop a spreadsheet to help him manage and keep track of his window cleaning business. He has around 300 clients and they're all local but I don't know much more than that! What can do to make it work perfectly for him? And what would be the things that make keeping records really easy? This guy is not very confident with computers either so he needs something that will be really easy and simple to use, but I want it to be professional. So I thought I'd come to the experts for advice! Any help is greatly appreciated!