The maximum number of bones affecting a single vertex.
| Auto | Chooses the number of bones from the number current QualitySettings. (Default) |
| Bone1 | Use only 1 bone to deform a single vertex. (The most important bone will be used). |
| Bone2 | Use 2 bones to deform a single vertex. (The most important bones will be used). |
| Bone4 | Use 4 bones to deform a single vertex. |