For my ACBC survey I would like to randomize not all but only a subset of attributes. For example, if I have 6 attributes, I want the first 2 attributes to always be the same, and only the remaining 4 should be randomized. This is due to some sort of natural order of a few product features.
This should be the order in BYO, Screening and Choice Tournament sections:
Attribute 1 (fixed)
Attribute 2 (fixed)
Attribute 3 (randomized)
Attribute 4 (randomized)
Attribute 5 (randomized)
Attribute 6 (randomized)
How do I changed the code of the constructed list below to take this into account?