The Examiner will have carefully chosen a route to see how the candidate copes with CAS and other hazards on route. The turning points given by the examiner are the waypoints and you should plan to fly from one to the other. If that involves penetrating CAS he will expect you to obtain a clearance. If it involves avoiding a hazard then he will expect to see you do it in a logical manner and regain track once clear. He will not expect you to add your own waypoints to avoid the obstacles he has carefully chosen.