Console website pages cannot be turned "off", as in "publish" or "draft", if that is what you are thinking of.
Instead, you can simply delete temporarily the menu a page is linked to on your Console website (in Website > Menus > 'Delete' option in the drop-down list to the right of the menu), so that people will not be able to find and access the page (unless you provide them with the direct link to the page). Deleting the menu does not delete the page that it's linked to. When you finish working on your page, you can recreate the menu and re-link the page to it.
Another method is to setup the page as private with permissions for no one, in Website > Pages > Edit page > "Menus & Permissions" tab > check the box in front of the option 'This page is private (only logged in clients can see the content of this page)' > Save. When you are ready to make the page public again, you go via the same path, uncheck the option for the page to be private and save.