Survey categories Survey categories provide a way to group questions of a similar theme for a given survey. There must be at least one survey category per survey definition and every survey question must be associated with a category. When you create a survey, the system generates one category, which all the questions belong to. For simple surveys, one category is usually enough. Consider creating additional categories if you want to accomplish any of the following tasks. Separate groups of questions into collapsible sections by category on the survey questionnaire. Report on category scores, which are calculated based on responses for all questions within each category.