At the moment the only way to see what modules comprise a Module Group from Test Case view is to double click on it which would switch you to a Group View tab. This is not very handy if you want to review Group modules in context of a text case where that Group is used as you have to switch back and forth between Test Case and Grop View tabs multiple time.
Please make Groups expandable in Test Case view the same way it is doe for [SETUP] and [TEARDOWN] special groups