Questionnaires in OSWeb
OSWeb does not support forms. You can implement basic questionnaires using a combination of sketchpad and mouse_response items, but this is not very convenient.
As an alternative, you can implement a questionnaire using another platform, such as LimeSurvey, and then link to this questionnaire from your OSWeb experiment. The video below shows how to do this in such a way that you can tell afterwards which questionnaire data belongs to which OSWeb data.