Form building with cascading select choice

How to impose the choice of an answer for a single-choice question related to a previous question.
Example: I have a first question Q01= Interviewer’s name (which indicates the first and last names of all the interviewers who will collect the data) and a second question Q02= Department (which gives the list of departments in the country). I would like to put a constraint on Q02 so that when interviewer “A” ticks his or her name in Q01, it is only his or her department of assignment that will be displayed in Q02. How should this be done and what form of constraint should be used?
Thanks

Hi @MMM_MINTOGBE,

We call that cascading select in KoBoToolbox and you could design the same as outlined in the post discussed previously:

As a backup you could also have a look at our support article ADDING CASCADING SELECT QUESTIONS.

Have a great day!

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