API Question What the api to switch external ground camera to cockpit external camera ?

[Woodylepic]

Hi all
I recreat White sand (LC36) in 1963 period whit Little Joe II launch pad and rocket I want to switch the focus from the Launch pad to Little Joe II after 10 second
My question is, what is the api to switch the camera from 1 vessel to an other one ?

 

[Woodylepic]

I got it, now I can change focus from a vessel to an other vessel but what is the api to switch camera mode from cockpit to exterior view or to diferent camera pos ? thank.