Create Deformers > Jiggle Deformer >
Scales the jiggle effect up or down on all points, regardless of individual weights. The individual jiggle weights do not change value, only the overall amount of jiggle.
Jiggle applies only to animated points, not to the animated transform node of the object. For example, suppose you have animated a kangaroo hopping as it talks. You animated the hopping motion by keying the translate attributes of the transform node, and you animated the moving mouth by keying the points of the mouth. With Ignore Transform on, only the talking mouth jiggles.
The options on the Advanced tab are common to all deformers. See Advanced deformer options.