Heyy 
if u go to preview your story on the right hand side there should be a box at the side thats says “show helpers”.
A few more boxes will apear up on the right.
just click on the box that says camera.
if u look at the bottom left corner there will be the X and Y cordinates there.
to change them just zoom in on the place you want your camera to go and the cordinates should change.
Then you just need to copy them in to your script
Hope this helps if u have more questions feel free to ask 
(I might not respond super quick because i have an online class soon 
)