From your post, I assume you are creating WebHelp output.
You need to create a window for the help in the Project Set-up pod. Then, you need to make sure you call the output so that the window is used. See http://www.grainge.org/pages/authoring/calling_webhelp/calling_webhelp.htm. This article on Peter's site give you an overview over the possibilities of calling context sensitivive webhelp and also tells you how to specify the needed window. Also, the installation directory of RoboHelp 8 contains a directory called CSH API. In there are example API's your developer can use to call the help.