[Zope] Adding a zclass programmatically

I'm working with the product YihawDirectory. It contains a zclass named YihawChannel which in turn contains other zclasses representing various objects that are collected and displayed. Looks pretty cool. I'm working on a user interface for adding instances to my folder object. From within a YihawChannel instance, I can just call methods directly, excellent. But I can't figure out a nice way to add the first YihawChannel object to my folder. There is an existing YihawChannel_addForm that comes with the product. I sure would like to use that but I can't seem to reference it. This is propbably a very basic question and I've struggled for a while. If someone would point me in the right direction, I'd be grateful -mjm