[Threshold]

https://sampwiki.blast.hk/wiki/InterpolateCameraPos
https://sampwiki.blast.hk/wiki/InterpolateCameraLookAt
https://sampwiki.blast.hk/wiki/SetPlayerCameraPos
https://sampwiki.blast.hk/wiki/SetPlayerCameraLookAt

I don't understand what you're having trouble with? You have the functions, what exactly don't you understand about them?

If you want a moving camera, use InterpolateCameraPos and InterpolateCameraLookAt. If you want the camera to move instantly, you can use SetPlayerCameraPos and SetPlayerCameraLookAt instead. (Even though Interpolation has the option to do both.. :/)