I have a checkbox grid question where rows are statements and columns are brands.
I must show only known brands according to a previous question.
How can I do this in Checkbox grid? I couldn’t
I think Option Piping will help you achieve this. Essentially you can take selected brands in the source question and ‘feed’ them into the columns of the checkbox grid (the grid has to be on a page that follows the source question).
This help article will be a good place to start: