I have a survey where I first ask if a person is resident in one place (this is a radio list question with several option answers). If the person replies, say, Munich (which is 'A1') then in the next question (a matrix) I want to hide several columns (not raws). Is there a way to do this?
I have managed to hide rows using the 'relevant equation' field, but the 'relevant equation' option does not appear for columns, just for rows...