it is possible to add a controller for the elbow bone to be moved using keyframes

[urekmazino00]

If a dedicated controller for the elbow is added to the Forearm bone to move it independently, like in edit mode, but with keyframes, that would be great.

env.mp4

[Nico-Duduf]

that's actually quite complicated, but doable...
I've been wanting to add something like that for a long time but did not have time to. I'm keeping it in the roadmap to 17.2

Note: to do that for now I use puppet pins, it's not ideal but in some cases (especially when limbs are separated in several layers) it works well

[urekmazino00]

I used bone envelopes to draw the hand, this method saved me time and the performance was better.
However, when using the Puppet tool, problems appear in the drawing.

[Nico-Duduf]

Yes, puppet tool and shape layers are always a problem....