Array by column is an array turned around: the items are the columns and the scale runs down the rows. Participants pick one point in every column. Use it when you compare a few items side by side, for example three brands rated on the same scale.
In the picture: 1 the subquestions, one column per item, 2 the answer options, the scale in the rows.
Click the purple + in the top bar. The question type picker opens.
Under Array, click Array by column. The question appears at the end of the current question group.
Click Your question here and type your question.
Type the items and the points of the scale. The items are subquestions and appear as columns, the scale consists of answer options and appears as rows. See Add subquestions and answer options.
Select the question to open its settings on the right.
Every column is stored on its own: the first column of a question with the code Q029 is Q029_SQ001, and its value is the code of the chosen point, for example A002. In the export, each item is a column.
When you have few items and a long scale. The items then fit side by side, and participants compare them directly. With many items, use Array (Point choice), which grows downward instead of sideways.
Every item needs its own column, so keep it to about three or four items. More columns get too narrow on small screens.