Hey, everybody.
Based on the fact that I have not received any suggestions to solve this issue. I have found a solution on my own. Maybe this issue is not so interesting for other, more advanced users, but hopefully my solution will help newbies like me.
Here is the solution:
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To solve this problem, you need to write the formula “contains(“A”,${B})” in the “survey” tab in the “choice_filter” column. Where A is the name of the filter column in the “choices” tab and B is the name of the question in the “name” column of the “survey” tab.
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In the “choices” tab, you need to enter, in the column named A from our formula (in my case, I named the column “filter”), the names of the subgroups that are needed to filter your choices.
This is what it looks like in the questionnaire.
You may ask, “Why is this necessary?”. My answer is, “Imagine when you have a large number of answer choices and you filter them by subgroup. But you want the ‘other’ option to be displayed at all times. So you only enter the “other” option, or in my case “add city” once, instead of multiple times in each filter subgroup”.
