What must be done to modify weights in the Skinning Editor?

To modify weights in the Skinning Editor, using the Weight Brush tool is essential. This tool allows you to paint the influence that each bone has on mesh vertices. When you interact with the mesh in the Skinning Editor, the Weight Brush enables you to precisely control how strongly each vertex is affected by the bones. As you paint with the brush, you can increase or decrease the weight values, which directly alters the deformation of the character during animations.

While selecting a bone and adjusting its properties can provide insights into the overall bone structure and hierarchy, it does not directly allow for fine-tuning the weights assigned to the vertices of the mesh. Adjusting the GameObject’s transform will move the object or bones but won't influence how the mesh deforms under animation. Changing the animation settings is related to playback and performance of the animation itself rather than altering the skin weights. Therefore, the Weight Brush tool is the correct approach for modifying weights in the Skinning Editor.