SketchUp is a powerful alternative to its own layers. Two powerful panels are combined into one, which can group and sort layers, save layer States, you can name, call and apply them to other scenes, control the visibility settings of new layers in other scenes, and so on

The function of collaboration management plug-in is similar to "external reference" in CAD. You can reference a model as an external reference object and continue modeling based on it. When the external reference changes, you can update it synchronously at any time. This XRef model can be modeled by others at the same time, so that multiple people can reference, enter