If you stumbled upon this board by accident, here is the post from which you can understand more about its purpose.
Below I leave instructions.
You can add participants and collect all the information (interview transcript, insights etc.) inside each card. Columns in this table can be used for preliminary data that you got from screener survey.
After finishing all the interviews copy all the separate kanbans from each participant and then collect them in this large kanban. There is no obligation to transfer all the cards, if you feel that there is no pattern there or if you see that one articular theme isn't valuable to you.