Blender 4.2.4. Rigify: Forearm twist bone

[CocoKozzy]

Blender 4.2.4. In Rigify, how can I add a forearm twist bone as a leaf bone of the elbow?

1. Below is an example from UE5. Normally there is a forearm twist bone that is a leaf bone of the elbow bone.
2. The forearm twist bone is not connected to the hand bone, it is a leave bone of the elbow. The hand is a child of the elbow.

3. I cannot use Armature > Subdivide because it connects the forearm subdivided bone to the hand.
4. Extruding a bone doesn’t work, because the extruded bone is not aligned with the forearm bone.
5. Editing the Arm in any way, seems to break the “Generate Rig” operation.
   
   

Question: In Rigify, is there a way to create a forearm leaf bone of the elbow to create a forearm twist bone?