ZA6 Mastering/Commissioning

I wish to reset the zero point for joint 6 on my ZA6. I have determined that my sticker and zero point are mismatched, that is, that the tool mounting holes are not aligned to the zero point according to the picture seen in this post.

The official documentation mentions commissioning, but it’s more of a todo section instead of actual info.

I also see that there is a mastering option when loading pathpilot and I clicked that, but the commissioning button in there is grayed out so that I cannot click it. Also, I would really rather prefer to zero only joint 6 and keep the factory set zero points for all other joints.

So is the mastering/commissioning process documented anywhere?

Also, I am familiar with the underlying ROS, so if there is a method using ROS, I am okay with doing that as well.