Yeah, I watched it, like I said, I love the dev channel, he does have the best videos available on the subject.
Unfortunately, I just can´t it to work for what I need to do.
I just want to add a jaw control to the head and I can´t get the control to get parented to the head control, which is being created by the neck module and I just don´t understand wether thats something I´d need to set up differently in the custom jaw module or if it would need to be set up in the neck module (maybe because I need to set up an extra connector directly for the head bone).