Format of citations in Word won't change EN21

I’ve just upgraded to EN21 on a new Mac and the cite while you write function isn’t working well.

When I ‘add citation’, and select Vacnouver style, the reference appears in-line with text. The bibliography doesn’t appear at the end of the document as usual. I can’t seem to find any option to change this in ‘configure bibliography’ or citation preferences etc.

Please help!