Looking to show a group of similar questions in one chart and year-to-year results. Only see ability to use longitudinal for each question in a separate chart. Any way to combine into one chart?
I am going to assume that you are talking about the standard report. These reports are essentially database queries that are presented in a graphical format. They are not well suited for the complex analysis that you are describing.
If my team had to build a chart like you are describing, we would probably export the data as a CSV file and use EXCEL to develop the chart.