No print scaling?

Hi all I seem to have no print scaling options on my versalink c405dn.

Win10 x64 Pro, latest drivers from Xerox.

I need to print some stuff at about 40% of original, but on A4. The printer manual says scaling options are on the Printing Options tab in the Paper field - but they aren't. There are no scaling options anywhere:

The "Other Size" tab just leads to either "fit to new paper size" or "change document size" - neither of which allows me to scale the print image (and neither of which actually prints - if I select something other than A4 the printer refuses to print until I load whatever the 'other size' paper is).

There are no print scaling options anywhere else that I can find.  My old Brother printers offered scaling on the front page of the driver.

Surely there is a way that a near-£600.00 printer can scale images for printing? What am I missing?

Thanks!