You can create collections of objects with FBGroup and FBSet.

They are used for the organizing, selecting, and working on objects in a scene. For example, if you add all the nodes from the arm of a skeleton to a set, you can then scale, rotate, or translate the entire arm at the same time. When you manipulate a set, the proportions and positions of its objects are constrained.

For an example of how to delete all groups in a scene, see the code sample DeletingGroups.py.

Groups and sets differ as follows:

• The visibility of sets can be animated, and the animation stored in sets can be cached.
• Sets are exclusive; while the same asset can appear in many groups, it can only occur once in one set.

To see how to create and edit groups, see the sample script FBGroup.py.