Button Change, Camera Angle, and Zoom???

I know how to edit what keyboard buttons do and here is an example:

mouse = game.Players.LocalPlayer:GetMouse()
keyneeded = "" --Put key that you want pressed in the quotes
local function onKeyDown(key)
    if key == keyneeded then
        --Put code here
    end

    else
        print("Wrong key was pressed")
    end
end
mouse.KeyDown:connect(onKeyDown)

Put that code in a localscript and put the localscript inside of your starterpack.

Hope this helped! If you have any problems please comment.