I'm doing a multi-select question now and we have more than 30 items for respondents to choose. In order to make items clear, we categorize the items into 3 sections but don't know how to apply our idea in sawtooth. Here's the format we want:
Q1. Choose all the items that apply to you.
1. item 1
2. item 2
3. item 3
4. item 4
5. items 5
6. item 6
We want users to choose all that apply from these 6 items and questions here is how to add subtitles(Section A,B,C) inside items.