I applied butt jiggle effect this scene

but you need to do some process to keep the effect to your characters

1) Before change character, select original female char and open material editor

2) search dy(body) and copy body setting, now you can change character

3) paste the body setting to your character. 

it's done

but this will override maintex, normalmap, detailmask

so if you want to keep them, there's other way

Export original character's DisplaceTex and import it to your character (your character must use Vanilla plus shader)

Thank you so much for the support, and If you have any other questions, please send me a DM.