How to Limit a Child Bone from Following Only One Axis of Parent Bone's Rotation?

Hi everyone,

I’m working with Control Rig and I’m trying to figure out how to limit a Child Bone from following only one specific axis of the Parent Bone’s rotation. As we know, a Child Bone typically follows the Parent Bone’s rotation in all three axes (Pitch, Yaw, Roll), but I want the Child Bone to ignore or not follow one of those axes.

For reference, I’m working on retargeting. However, one of the axes keeps moving, and I want to ignore only that specific axis. I don’t want to ignore all the axes (Pitch, Yaw, Roll), just one of them. Is it possible to achieve this using Control Rig alone? Or is there another method I should consider?

Any help or guidance would be greatly appreciated!