make it clear what info is needed
Using the purpose, concept, or theory of research to consider all variable. To make a list of each variables that what indicators, and how many topic of question should have. This help to understand each variables and can see the overview of questionnaires.
The first step should be relatively easy, assuming that the researchers have done a good job at earlier stages in the research process.
Hypotheses, dummy tables, etc., make it clear what information is needed.