When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number.

Microsoft Excel normally does not let users change the values of protected cells. To edit a protected cell, you must first remove its protected status. You can do this using either Excel's ribbon ...

To lock your cells in Microsoft Excel, you just need to head into the program's "Protection" tab. Locking a cell in Excel will make it so viewers can't change the data inside of that cell, which ...