Unity 3rd Person Combat & Traversal - Cinemachine V.3 problems

Hey guys, i have a big problem with cinemachine 3. Currently i am following the Unity 3rd Person Combat & Traversal course from Nathan. I am in Chapter 4, part 28. In this part we are implementing the TargetCamera and the TargetingGroup. My problem is, that whenever i try to add more objects to the TargetingGroup, the camera is moving wild around the character. I also recognized, that in the Nathans version of the game, the camera adjust immediatly when he add it to the PlayerRig. Can someone help me there?