I create many different kinds of surveys and want add a category field then use that field in reporting. Categories would be quiz, instructor evaluation, product evaluation. How can this be done?
My recommendation would be to have a hidden question on the first page of your survey with where you can set a default answer for that survey.
For example, on a quiz you could have a hidden question with one answer option – quiz. You can then set the default answer as ‘quiz’ so that each time a respondent takes this survey, quiz is automatically selected and thus available in your dataset.
Here is some info about default answers:
In order to hide the question, you can add sg-hide to the question settings under Layout -> CSS Class Name.
I hope this helps!