We have created an excel-based purchase order (PO) form for use in our company. I would like the form to automatically number itself (increase by one) each time an employee uses it--each PO requires a unique number. The form is located on the company's server, and the cell for the PO number is D11. I am not a skilled or advanced excel user and will require step by step instructions if someone is willing. I have enabled macros for this spreadsheet and I know how to get to the VBA screen, if that is what's required. Thank you!