@KLAUS_BOND I think more information is needed here on what you would like to accomplish.

But if you just want to show different questions based on a certain change. You can use branch logics and multiple blocks to show when required.

Hi @Deepak thanks so much for your message. So, would i work like this: I would create blocks containing all the single stimuli, manipulations, questions and scales I need for the entire project which consists of 18 different questionnaires across 3 studies. After that I use branch logic to pick and arrange the blocks I need to create the respective questionnaires. Is that correct?

@KLAUS_BOND 

That is when all the questions have changes. If there are certain questions that need to be changed and others are just same across all 18 questionnaires. You can just include changed questions multiple times across one questionnaire and manage it via Display logic.

Hope this helps!