How can I apply Question validation or Sub-question validation equation in "Array by column" type question? I created the equation and I was sure it would have worked but when I opened question property I didn't find these fields to insert that equation .(:
Survey Designer and Programmer
"I always suggest to have a group by group display layout and create a seprate group for each question. This will be extra work but you will get flexiblity to create your question by using more than more lime survey question types."