This is my first venture into web site design, although I have been involved in software development and customisation, so I am still learning how to structure your system. I want to be able to develop multiple sites at the same time. At the most basic level I want to have a separate development and production versions of a web site. I realise that you have the ability to have draft facility in the CMS but that is not sufficient. Both content and the structure of each site need to have the capability of being completely independent.
How do I go about this?