Lock Screen Rotation for specific QML pages or programmatically lock/unlock screen orientation

There should be a way to lock the screen rotation for particular pages/screens and not just for the whole app. i.e. I should be able to lock/change the screen orientation from any QML or C++ file for however long is needed then unlock/change back when finished.

P.S. I don't know exactly where this should go, so please move it if this is not the appropriate place.