How to use with a different rig?

[sygi]

Hi, thanks for the cool project.

It works like the charm with the Vincent character and I would like to use it with a different character, with a rig based on Rigify meta-human, not BlenRig.

Could you share how you get to know which rig bones to use in here and how you adjusted the constants, so that I could adapt it for my rig?

Thank you!