I understand that the model doesn't blink.
Is it possible to shake the chest of the xps model?
Most of the MMD models shake their chests, but the xps models do not.
Most of the xps models move, but only the eyeballs.
Yes the XPS models can shake boobs, but you'll need to setup its boobs physics first, since each model might have different bone setup, we can't apply that automatically. In the actor settings, go to the physics tab, open Boobs Physics and then click on Select Bones, then tick the bones that represent left and right breasts. Usually that should be enough but if it's not working correctly you can try to adjust the spring force & position offset etc in the settings.