I am tasked with a project at work. Multiple users access this spreadsheet via MS TEAMS. I have already set up data validation, and require each user to select the date from a drop down menu. The initial drop down had dates set up like mm-dd-yyyy; however, the moment I uploaded the spreadsheet to TEAMS, it is automatically changing the hyphen to a slash! I do not want this! What can I do to resolve this chaotic mess?