Booklet Printing in Pages

Hi

I have recently upgraded to OS 10.14, Mojave, and Pages 7.2.

In the past I have been able to print documents as PDF booklets from an item in the print menu, which may have come from some sort of downloaded script.

Now when I click this nothing happens, so presumably something has changed in Pages or Mojave.

The only work around I can see is to save the document as a PDF and then print from Adobe Reader, which is a pain!

Has anyone got any ideas or is there a new way of doing this?

Thanks,

Andy