You can create groups of objects and assets in your scene. You can store any type of object in a group. For example, you can create groups of lights, cameras, models, and so on. You can also create a group that contains the entire hierarchy of a Control rig. To change the timing of the animation, select the group, then make changes in the FCurves window.
To create a group:
The new group is listed in the Groups list. If no objects are selected, an empty group is created.
When creating groups you can also select objects in the Scene browser or the Viewer window, right-click and select Create Group from Selected Item(s) in the context menu. The new group is automatically named “group”.