1. Login as a teacher, turn editing on in a course and add a lesson activity.
2. Follow the 'Import questions' link.
3. Try uploading a GIFT format file e.g. http://moodle.org/pluginfile.php/134/mod_forum/attachment/236161/GIFT-examples.zip or others copied from http://docs.moodle.org/en/GIFT.
4. Preview the lesson activity and check that all the questions are displayed correctly.