Figure 2.31 - New Collection
With a double-click on any Collection name, you can rename them to
something that will help you manage the scene. Still, in the Outliner
Editor, you can move objects between Collections with a simple drag
and drop. It is even possible to drag and drop full Collections and nest
them inside other Collections.
Another way to move and manage Collections is with a shortcut in the
3D Viewport. If you select one or multiple objects and press the M key. It
opens a small menu that lets you move the objects to an existing
Collection or create a new one (Figure 2.32).