Hi, Lena,
as Tony said: the easiest way is to use multiple-choice questions with maximum one answer.
In the screenshots I did not use array exclusion filter but simple relevance which is IMHO obvious to understand.
Both questions are multiple choice.
In the subquestions of Question 2 each subquestion has a relevance meaning:
Only display item 1 if this item is NOT selected in Question 1 (Q1_1!='Y')
Okay, the item will not be grayed or something but just be hidden.
Otherwise JS.
Best regards
Joffm
as Tony said: the easiest way is to use multiple-choice questions with maximum one answer.
In the screenshots I did not use array exclusion filter but simple relevance which is IMHO obvious to understand.
Both questions are multiple choice.
In the subquestions of Question 2 each subquestion has a relevance meaning:
Only display item 1 if this item is NOT selected in Question 1 (Q1_1!='Y')
Okay, the item will not be grayed or something but just be hidden.
Otherwise JS.
Best regards
Joffm