Easily hide/show worksheets using a custom button in a worksheet in Excel.
This tutorial shows you a very simple system that anyone can use. It requires a little vba to achieve this result, but that is fully covered in the video.
The reason you might use this feature of vba/Excel is to do things like hide raw data worksheets, helper worksheets, or any other worksheet that the user does not need to see all the time in order to use the workbook.
Password Protect Sheets in Excel