I'd like to setup a site with a simplified management screen, similar to Zope.org in that the editor of the site only has a very limited set of elements to choose from: A two-level hierarchy structured in sections and subsections, and both of them can contain one or more pages. I thought I should use ZClasses to implement this: A product "MySite", inside a ZClass "MySiteClass" (with a base class ZObjectManager). Now I thought I should create a second ZClass "Section" (also derived from ZObjectManager) inside the methods view of MySiteClass, then a ZClass "Subsection" inside "Section" and finally a ZClass "Page". I think that's what the Zope Developer Guide suggests, in "Classes inside Classes" But now I fail to tell MySiteClass that it should only take subobjects of type "Section": The "Subobjects" view of the MySiteClass class doesn't list Section (I guess since it's not a product but only a method?). I'm a bit lost here: Do I have to drop this concept with encapsulated ZClasses and should I instead setup the Section, Subsection and Page classes as products of their own ? Gregor