[Q] deactivate checkboxes that got irrelevance on other checkboxes in Array

Hi,
I've got an a headache in resolving this:

The question consists of the Array that is represented by matrix of checboxes.
The respondent must check appropriate boxes in that matrix, but the logic must work as follows: if the box is checked in a first row (lets say, this is for subquestion that means "N/A"), whole other boxes in that column shoud be deactivated. Any ideas? Thanks a lot!

You might try modifying this workaround - manual.limesurvey.org/Workarounds:_Manip..._Excludes_All_Others

Thanks for linking to the source. I believe, by this approach I will get at least a part of the expected solution.