He brings the confident dog. Of course. Invisible lead.
 He works the relaxed dog, with the lead on.( she is afraid) Invisible lead and then praises her.
 At this time, I would use TTouch.
 To work at the animal pace. He is approaching him slowly
 Then he starts moving to desensitize the dog from movement. It is re-conditioning.
Then he teaches the owner. The owner gets present and approaches slowly. Then he makes the owner move a bit and return and stroke him. Desensitization.
 All dogs are afraid.
 She barks because he pretends he has food. She gets frustrated.