A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Well, even if the operating system allows multiple access, Excel does not. If anyone on the network has the file open you will get read-only access. However, if you mark the file as shared, Tools menu-share Workbook, then excel will allow multiple users to access the file simultaneously. However, you must be sure you have read/write access to the folder containing the file.