Hello Soren!
Unfortunately there is no possibility for changing options so you can close windows / sun roof by key remote.
The reason is pretty simple: By turning your key in the lock you are garanting an electrical connection, which makes the motors go for closing the windows. If you stopped turning, the movement of the windows would stop, too. And this connection cannot be provided by remote.
Would be cool, though!
Have fun with your Zafira
Michael