I was checking Arnold's Renderer and I saw that for the UI of the render settings they have used not only Description Resource but also Dialog Layout.
I have a VideoPostData-derived plugin to add additional settings to the render settings. I am currently using Description Resource, but I need more flexibility to build a complex UI, like Arnold's for example. Dialog Layout would give me the required flexibility.
How can I include a Dialog Layout inside a Description Resource? Or is there another way to build complex UIs for which simple Description Resource is not enough?