Network 3rd person camera setup

Hi everyone.
Currently I’m trying to set up a Camera that follows the player.
But even the the camera in “FPSController” Prefab in Standard assets doesn’t work right.
It is flickering like Server and Client are trying to position the camera at the same time.
I declared the positioning code as [ClientCallback] and put NetworkIdentity with Local Player Authorisation on the GameObject, no effect.
Can anyone post a tutorial where the spawn of additional prefabs is explained.
Seems like I dont get how Registered Spawnable Prefab list in Network Manager works.
What should be done to spawn Objects along with the player prefab?

Thanks in advance

Make sure you don’t execute the movement code for any parent objects on the client and the server at the same time. Especially not on multiple clients.

It’s all explained in the documentation:
http://docs.unity3d.com/Manual/UNetConverting.html

I forgot about the headbob which moves the camera. - Silly me…
And I read the documentation, but I’d like to have some example.
Just not the “learning by reading” type.