Hi! I searched the forums and the wiki, and did not find a correct answer.

So, I want all users to use the Carbon theme. But most of them changed their default theme. Then, how is the correct command (or sequence of commands) via terminal to reset all users theme to the one I want them to use by default?

Also, it's possible to hide some side bar options in administration Console (The Default COS for example) so only the main administrator can see?

Thank you!