The 1KA application enables immediate changes to the questionnaire, but you must be careful if the survey is already active and in the phase of data collection. You can add new categories and modify the text, but if you remove any category, the corresponding data in the database will also be removed.
If the survey is inactive, then you can change the question type very easily. If you chose the wrong question type, for example ‘categories - single answer’, but would like to have ‘categories - multiple answers’, or any other type of questions, then simply click on the question and open the question editor. On the top right of the variable name (eg: Q1), you will find the question type. By clicking on the arrow or the type of question, a drop-down list of all the types of questions will appear, where you select then the correct question type.