Autodesk Navisworks API

[#1]

Currnetly we build models, then build models of models to create a browsing structure in the Selection Tree. Is there a way to add structure or levels to the Selection Tree with the api?

[#2]

 The built-in tree is how Navisworks converts the original CAD file model. you cannot add any more content.

But you can you could dump the model and build your own tree, i.e. implement the DockPanPlugin and place a Tree control. Thus you can organize the custom tree flexibly because every tree node is built by yourself. And you can also add any additional nodes and explain their meaning yourself.