Sheet Bar

[mmn1000]

Hello
A few days ago, I downloaded an Excel file from a site
I saw an interesting thing in this file, I was not allowed to create a new sheet, copy the sheet without using VBA.
Or copy the sheet. These tasks were done without using VBA
There are several hidden sheets in this file that I could not unhide
How can I create such a file?

Like the picture below

 

[Fluff]

The workbook is probably protected via "Protect Workbook" on the Review tab.

 

[mmn1000]

The workbook is probably protected via "Protect Workbook" on the Review tab.

Thank you for your guide

 

[Fluff]

You're welcome.