1. Securing & Sharing Workbooks
Excel Lesson 11

2. Protect Workbook
Password protects the file so that only users with the password can access it
Limits structural changes, such as adding, deleting, or moving sheets
Passwords cannot be recovered if lost
Passwords can contain up to 255 characters and are case sensitive

3. Password protect a worksheet
Assigns a password in order to edit the file
The user can view the worksheet

4. RAND and RANDBETWEEN Functions
RAND: generates random numbers
RANDBETWEEN: produces random numbers and allows the user to specify the lowest and the highest number
=RANDBETWEEN(100,200)
Every time you open the spreadsheet or modify it, the numbers will change when using these functions

5. Shared Workbook
Allows multiple users to make changes to a spreadsheet at one time
Change History: allows the user to view any changes that were made by another user

6. Document Inspector
Allows the user to search for hidden data (such as properties, comments, etc.)

7. Mark As Final
Makes the spreadsheet so that is “Read Only,” which means that people can view it without making any changes
Changes can be made if people click Enable Editing
Discourages people from making changes to the spreadsheet

8. Sharing
An Excel file can be shared to the cloud or sent through

9. Track Changes
Allows the user to view any changes that were made to a spreadsheet

10. Comments Allows users to insert a short note to a cell
When a cell has a comment, a red triangle appears at the upper right hand corner of the cell

11. Source
Microsoft Official Academic Course Microsoft Excel John Wiley & Sons, Inc., 2014.