[Asuno]

Well if you say its not needed , can you explain how can i do my right position? How to understand next skill is chaos trust for example?

It's pretty easy seeing as Chaos Thrust is part of a combo. When you start doing Impulse Drive and Disembowl then move to the back. Otherwise stay at the side for Heavy Thrust.

Both Fang and Claw and Wheeling Thrust tell you which one is active so just move to the required position.