How to make particle shaders effect head + hands?

[Omny]

hey, question regarding particle shaders: I've noticed that when you apply an effect shader to NPCs, the membrane shader will be applied to their whole body, but the particle effects only seem to emit from their body, but not their head and hands (specifically they seem to emit from their models' bones, not the model itself). Is there a way to make their head/hands emit particles?