Configuring Request Types
Request types are configured through the System Administration interface under the heading "request classes".
Different classes of request have different names to distinguish them (once created they will appear under the New Request options) and an associated "concrete" class.
The "concrete" class is the actual PHP code underlying the request which can be created and customised by the user. By default all requests use the standard "concrete" class type which comes included with the system (and is sufficient for most needs). For information on the creation see the custom request page.