The “Bullet” Soft-body Physics in Carrara 8, doesn’t support creating a soft body “area”,.. But Sparrowhawke’s Jiggle plugin does work, and should work in Carrara 188.8.131.52 to create the effect you’re after.
Sparrowhawke’s plug-ins are all free, and they’re some of the most useful. It’s well worth spending the time lo learn how to use them.
The Modifiers in carrara,. are basically Object modifiers,. which deform the object,. so, there’s little ability to define an “Area” of a model to be effected,. ...depending on the modifier options.
Fenric (another plugin developer and Carrara guru) has creates an ERC plugin (Enhanced remote control) which could also be used to drive secondary animation.
Carrara has a decent key-frame sequencer for animation and you can easily duplicate key-frames and move then to another position in the time-line, to repeat a movement.
There are also a range of different “Tweener” types, such as Bezier, or Oscillate,. which can be used to repeat a movement a number of times.
Carrara can also take this animation and convert it into an NLA (Non linear animation) clip,. which can be placed in the timeline, instead of using key-frames,..
You can place NLA Clips in the time-line to form a sequence of different animations.
You can also specify which parts of the animation in the clip, will effect which specific parts of the figure.
For example: you could animate a character Blinking,. save it as a clip, and add it into any other animation sequence, as many times as you needed, and you can place the clips anywhere in the time-line.
You can also save / convert Poses, from keyframes, to NLA Poses,. which can also be placed in the timeline, and the animation will transition from one NLA pose or clip, into the next.
NLA Clips also have options to change the playback, so you can Loop the clip endlessly, or reverse the animation, or change the speed of playback.
Another option in Carrara is to use “magnets” just as you would in Poser or DS, to effect the mesh,.
you could animate those to push/pull the mesh, when you needed,.. and repeat the keyframes in the timeline.
Hope some of that makes sense,.. and helps