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 Models.
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 next one you drag it and drop on 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).
Nested questions
On the last level of your branch you can nest multiple questions. To do that drag and drop question right above/ below a question on the last level (short blue line will indicate where to drop question to nest it next to the variable). In presented example, the last level of nesting is question "Marital status". If you will drag and drop "Education" variable just below, it will be nested on the same level.