If you are thinking about preventing Excel mishaps, this is a must! This article details how to set up and remove sheet and book protection. In fact, you can easily set it with a password. This article will help you protect your important data.

When using the sheet protection function, there is a function that allows detailed usage such as "allow selection and input in this range of cells, but not in other cells". For example, let's say you have a system that automatically creates transfer data when you enter a company name and amount of money as shown below. In this example...