Coda

[John McWilliam]

I need to write a coda which starts with a change in key and time signature. 
The example taken from the manual does not illustrate this requirement. All my 
attempts have resulted in visible a key signature and time signature  at the 
end of the melody section (before the coda). I want to hide this and if 
possible create extra space between the melody and coda sections. Does anyone 
have a suggestion as to how this could be achieved? I include a snippet to 
illustrate the problem.

John McWilliam