Hi,
you know that this is one "multiple" questions with some checkboxes removed.
And LimeSurvey does not offer an option to "group" answer options or subquestions.
What I can show you is:
Create two "multiple" questions
Do not remove the checkboxes of certain subquestions but insert an additional header.
Because you referred to this link in the German part, you might be able to read German.
So have a look at my Tutorial 2, Chapter 2.2.
Both questions have the same "Randomization Group name"
In both questions set ""random order" to ON.
Now merge the two questions by adding the css classes "no-question" resp. "no-bottom"
To decide which question was first, use the property ".qseq"
You can insert the css classes by Expression Manager like
{if(Q1_SQ001.qseq==0,'no-bottom','no-question')}
If the question was the first add class "no-bottom" else "no-question"
And in the second question the same.
{if(Q2_SQ001.qseq==0,'no-bottom','no-question')}
You did not say how you want to use this.
Are participants only allowed to select subquestions of one of the two groups?
Then you have to validate.
Therefore I started with a question of type "text display" to display the question and the error message.
Followed by the two multiple questions.
But to be honest:
In this case it is much better to prepend a single question "Which of these two options do you prefer?" and than show the according multiple question.
Joffm
Volunteers are not paid.
Not because they are worthless, but because they are priceless
The following user(s) said Thank You: DenisChenu, surveySn
Because of such solutions ( where you merge several questions into one) we often recommend to use the "group by group" mode with one question per group.
This way the look&feel is like "question by question", but you have still the option to show more than one question per page, or combine questions.
But you remember that I wrote
But to be honest:
In this case it is much better to prepend a single question "Which of these two options do you prefer?" and than show the according multiple question.
Joffm
Volunteers are not paid.
Not because they are worthless, but because they are priceless