Grouping row data

Using Visual Studio 2010 report designer.

I currently have a non-grouped report as such:

Lesson # |   Question #   |    Question Text

1|1| ~~~~~

2|2|~~~~~

I now want to add in the answer data, multiple answers per question, and have that data appear in detail rows below each question row, with answer row visibility toggled by clicking the question number.

Adding row groups wants to put the answer details to the right of the questions, not below.  I have no idea what column groups are trying to do.