You're welcome, LB.
Those three dials are all position, not size. Your first three descriptions are correct, except that they are Morphs rather than just Transforms... meaning that they also affect the surrounding facial geometry.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)