Automatic Cross-Referencing with Endnote and Word 2016

The OSCOLA (law) style requires cross referencing in footnotes. For example, if you cite a reference a second time, the short form is not only, say, Author, but also a cross reference to the footnote with the full reference. A cross-reference in from footnote 12 to footnote 3 would look like this:

  1. Smith (n 3).

Does anyone know how to make Endnote and Word 2016 do this?

Many thanks!

P.S.: There has been a post on this previously - but I just wondered, whether there have been any updates since 2013, as other citation software is able to automatically cross-reference footnotes. Would be great not to have to cross-reference everything manually.