No problem :)
Yes, there are predefined locks (btw "T" is for Translate I suppose, or Transform rather, but they put label "Move" at the check box :Whistling:), but you can lock practically any limb with pinning (to some degree).
Sometimes it still slides the bone slightly though, even if locked. Reach effectors work better, but they are only available to circled limbs in Reach panel.

Excellent! That was great! I played countless times with the motion layer editor and its predefined locks, but never came in my mind to try to lock this way. Brilliant :) Thanks again! 🤗

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Software developer. iClone hobbyist since January 11, 2020. Best work so far: Robots among us: The Lab and The sad end of a legend
In progress: Black Mamba
AMD Ryzen 3950X 16C/32T 4.2 GHz, 64GB RAM, RTX2080 11GB, 2TB Samsung 970 Pro SSD, 8TB Seagate BarraCuda HDD, Win11 64-bit, iClone 8.12

Does somebody know, it is possible to block the elbow to move? I tried two approaches, but both of them failed:
- enabled arm collision and placed above a rigid body, hoping the rigid-rigid collision detection will prevent arm movement - no way.
- tried to modify wrist reach effector's pivot position - no way.
I want to create a motion when the character rest his elbow fixed on the table while the arm moves around it (like in arm wrestling aka skanderberg). I could try to find some predefined mocap animations containing such arm position then to "adjust" it for what I want, but maybe's much faster to keyframe it - if possible.

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Software developer. iClone hobbyist since January 11, 2020. Best work so far: Robots among us: The Lab and The sad end of a legend
In progress: Black Mamba
AMD Ryzen 3950X 16C/32T 4.2 GHz, 64GB RAM, RTX2080 11GB, 2TB Samsung 970 Pro SSD, 8TB Seagate BarraCuda HDD, Win11 64-bit, iClone 8.12