hi Luke,
would setting up multiple password protections blow up the file size for a 300+ worksheet workbook?
My guess, purely guess, is that Ahhhmed is the owner of the file and if his readers make changes to the file sent from him, via email and not sharing over the same server with equal access, then there is no incentive to add a password. He just need to re-send another file to his readers?
I have similar setting on my side where some of the files created and managed by me are not accessible to my customers on the chain of process. I send my file to my readers to work on, and if they make a mess and corrupt the file, I still have my master. So I'm not inclined to add password where it is not necessary.
To Ahhhmed,
you can set simple protection without a password. Just leave the area blank and safe you setting up another process of recording, tracking and updating passwords. Many of the spreadsheets I created have protection without a password. Readers want the flexibility to make certain changes depending on the situation. So I have a no password protection my reader can remove when called for.