I have a large Excel Workbook called KRS. I use a MAC but others who will share have a PC. We are running Office 365 2016. I need 3 people to be able o access and update the file together. My workbook has many MACROS and is larger than 30MB which means it cannot run on Excel Online. I also have one other Excel Workbook , MONEY, which pulls data from KRS and that each of us needs to use together. How can I allow all 3 of us to share and make changes to the workbooks at the same time? The MACROS are critical! Thanks for any suggestions.