Cell: You can also protect just specific cells on a worksheet from being changed.
And you protect the structure of a workbook so that anyone can open it, but they need a password to rearrange, rename, delete, or create new worksheets. You can make the file open as read-only by default so that people have to opt into editing it. You can encrypt it with a password to limit who can even open it. Protection in Microsoft Excel is password-based and happens at three different levels. Fortunately, Microsoft Excel provides some pretty good tools for preventing people from editing various parts of a workbook.