Comment 7 for bug 745625

> shall I add a page in the preferences ?

Alternatively one could consider
b) using a second tab in the existing (PDF/EPS) export options dialog for the PDF/LaTeX options (might be confusing for many (or most?) users never having anything to do with LaTeX), or
c) creating a new LaTeX export extension (unified for EPS/PDF + LaTeX), with all options relevant for LaTeX documents (possibly organized with notebook pages aka tabs, too)