I have a scene with four people sitting in office chairs around a table. I was wondering if there was a way to use the top half of the motions? Like, is there a way to keep them sitting and perform the animations? 
I know I probably should use this opportunity to try to self-animated the scene, but while attempting that, this thought occurred to me.

You can (could) do that with "masking" in "Motion Puppet (under "Animation")...
Haven't used it for a while, but it seems broken.
With or without masking, using motion puppet made iClone crash immediately


Toystorylab on Vimeo :     Crassitudes (my "Alter Ego") on Youtube: 

Oops, didn't see you were talking about Cartoon Animator
I was talking about iClone...
Well, at least now I found out the function is broken



Toystorylab on Vimeo :     Crassitudes (my "Alter Ego") on Youtube: 

I had no idea this was a thing! Wow—thanks! 
I go to Remove Animation, but I don't get a drop-down menu; do I need to update CA4?

Edit: Oh~ You have to right-click the Motion in the Timeline itself~ Sorry; I didn't know that.

Don't worry; that's fine. I should've added CA4 in the tags. I'm always happy for posts, regardless! 

Refer here:-
https://manual.reallusion.com/Cartoon_Animator_4/ENU/Pipeline/Content/Resources/ENU/09_Timeline/Removing_Motions_of_Body_Parts.htm?Highlight=remove%20animation


YouTube Tutorials Here