Protect Worksheet In Excel 2007. Note that this is different from password protecting your entire file. Rather than protecting an entire spreadsheet, you may want to protect a specific Select the Protect Sheet button and then save the spreadsheet to implement the changes.
Unfortunately, this protection applies to everything on the worksheet, including groups.
By default, all cells are locked, but this does not take effect until you protect the worksheet.
Only when you have a combination of cells which are locked and protected can you truly prevent people from making. Select all cells in the worksheet by clicking the Select All button, found above the row numbers and to the left of the column headers. If you're sending out an Excel file to people who are supposed to fill in information, your best option might be to selectively unlock the cells that they're supposed to.