There are two primary professional workflows and several automated alternatives. 1. The Blender Workflow (Recommended)
: Import the GLB, ensure the armature is set to a "Humanoid" type, and use the VRM panel to assign bones (e.g., mapping your model's "UpperArm" to the VRM "upperArm" standard) 3. Unity with UniVRM (Professional Standard) convert glb to vrm
: