Need to take website off line for page restructure

Hi There,

I am not hugely confident with squarespace.  We are using Brine and it is 7.0 version.

A couple of questions:

1) I need to take my client's website offline temporarily while I shift some pages around (changing the navigation).  Can anyone suggest how I do this?

2)  If the website is live, and I am restructuring within a page, is the best approach to work on a duplicate hidden page then replace the orginial age once the changes have been made?

Best regards,

Skjell

Thanks so much @creedon