This guide will help you configure the CMS3 System, this includes:
You have to select a default namespace that the System shall redirect to, when users request you website without specifying any namespace. If you don't specify one the request will return a 404. Please make sure the plugin that handles your default namespace has a default action when called without any identifier. Default namespace: NSOPTIONS
You have to specify a default outputhandler, different outputhandlers has different settings. Here you have to select with outputhandler to use when processing information for end-users. If you don't specify anyone, CMS3 will choose the first OutputHandler that is available. Configuration of template, menu and stuff like that should happen in the configuration process of the outputhandler of your selection. Default outputhandler: OHOPTIONS
If you have pressed the apply button during each step, you should be done configuration the system.