Do you work on the content of new subpage and don't want your customers could see this page? Do you want to create just redirection and don't want to this page be visible in the menu of pages? Hide her. How to do it?
In the administration of your website set the page you want to hide.
In a field Visibility pick up option "Hidden".
In tree structure will appear an icon Hidden page next to the page you hide (the page is hidden but it's URL address works - search engines index it.
To content of page like this can get the only administrator after login or somebody who knows the exact address of web page. In the page options can be also set to prohibit even this.
It's enough if after hidden page mark also choice Show "Page not found" error. Next to the title of the page appears an icon: (it means that the page is hidden and the URL address doesn't work - search engines will not find or index a page).
To the content of page set like this can get the only administrator of the web page after logging in.
Another option how to hide a content is to set the page as "Locked". To the content of the Locked page can a user get after login. How to set a Locked page see here.