The print dialog for QT-based applications (like okular) has a Properties button next the printer. The properties dialog used to have an Advanced tab to set print mode and the like. This tab disappeared due to a commit in Qt (dev-qt/qtprintsupport) in Aug 2012, cf. [2], without providing an alternative approach. This is now considered a bug [1] with priority P2-Important in Qt. Work on bringing back this functionality is ongoing [2], however the latest patchset (#22) does not apply to Gentoo's current stable version dev-qt/qtprintsupport-5.7.1 nor version 5.9.3. [1] https://bugreports.qt.io/browse/QTBUG-54464 [2] https://codereview.qt-project.org/#/c/213391/
*** This bug has been marked as a duplicate of bug 617460 ***