How can I get a list of all the clients in the scene and access their objects?

I need to be able to change the client's transform via the server.
I'm using the new UNET unity 5.3.

 

Do you mean, you want to have the server set the player object transforms, with Unity 5.2? If so, you want to put a NetworkTransform on your player object prefabs, and set the transform of your spawned player objects on your server.

 

Thanks I already solved it by using rpc funcitons to set the location of the client. ( I don't need it to snap every frame, only when I order it to ).