FM 10 - How set up Roman Numeral page numbers in preface?

Make the preface a separate file in the book. In the book window,

right-click on the preface file, and choose Numbering. On the Page tab,

set First Page # to 1 and Format to "roman (xiv)." Click Set.

If you have following chapters where you also want to use the Roman

numbering, click the "Continue Numbering from Previous Page in Book"

button instead.

To return to normal numbering, pick the first appropriate file and set

First Page # to 1 and Format to "Numeric (14)." Set following files to

"Continue Numbering from Previous Page in Book."

Setting page numbering for books from the book window usually gives best

results, but you can also set it for each document, from inside the

document. (Format> Document> Numbering) and then, using book window

numbering, set each file to Read from File on the page tab.