Customizing views in Magritte

Hi, at the moment I'm playing with magritte to test if it is suitable for my web application which is done with seaside. I created a model and I'm able to use it as a component with seaside. I have a model where ClassA has a 1:m relationship to ClassB. The exception here is that there is a fixed set of possible instances for ClassB to choose for the reference from ClassA. So what I need on the html rendering side is a kind of a pull-down and not an extra form for creating new instances of ClassB. I read the tutorial.pdf. There are three possibilities mentioned to customize the views for the model. Unfortunately I didn't figure out how this is working. The mentioned method defaultContainer (which should be overridden) doesn't exist in the magritte version I use. (I is the newest from Monticello) I even tried to set a new componentClass in the descriptionFoo class method.But with no effect. I'm not sure what I'm doing wrong. Magritte seems to ignore every step I take to customize. What would be the best way to customize on the class or even better on description instance side? Why is there an extra componentRenderer? As far as I figured it out componentRenderer is container dependent. What is the reason for having a additional method componentRenderer? What are the best practices for wiring magritte components together? The only way I found is to use onAnswer:. thanks in advance, Norbert