It is possible to create queries where certain question is nested in rows or columns below another question. This can be used, for example, to produce a table where rows are grouped by Make, and then within each Make by Model.
If you want to nest one question in another, you simply have to drag it and drop on the main question either in rows or in columns. In order to nest the next one, you drag it and drop it on the previously nested question. Remember that you can add additional nesting levels only on top of categorical questions (or, in other words: numeric questions can only be placed as the last level of a branch).
On the last level of your branch, you can answer multiple questions. To do that, drag and drop a question right above/ below a question on the last level (the short blue line will indicate where to drop the question to nest it next to the variable). In the presented example, the last level of nesting is the question "Marital status". If you drag and drop the "Education" variable just below, it will be nested on the same level.