It is possible in Joomla to allocate responsibilities to particular authors, so that they have access only to defined Categories of pages (i.e. to some subject topic within the website).

At present, this has not been done, so all Authors have access to all pages on the site.

The only specifically controlled access that has been set up is for those with read access to the Sutton Poyntz Ltd pages. A User Group has been set up for this purpose.