Skip Logic in Loop and Merge

I am building skip logic in the loop and merge. Consider my question like this: I have 12 treatment options for a specific road, and for each treatment type, the respondents must select a few options from a matrix. I build all treatment options in a loop and merge with the matrix of options outside. If a specific respondent does not use a specific treatment on the road, he should skip that and move to the subsequent treatment in the loop and merge. How should I arrange this?