How to rotate head in animated humanoid

I want to rotate rigged head, the main problem is The character doesn't have animation embedded But it has animator which control animation from another models. So when i using animation rigged Plugin it shows no transfermation in humanoid character and no bones. Whenever I had tried to rotate character 's head animation had distribes rotation. Using localbonerotation also not works. Is there any simple way to rotate only head of music character.