Summary Tasks

I'm trying to use a matrix table to display projects, summary tasks and tasks in a drill down to expand and collapse at each level. 

This is the project level from the project table.   

But when I expland the project, the summary tasks are at the same level of all the tasks and sorted alphabetically.  

It should look like this. 

How can I get a matrix to look like the project.  Here is what I have (initiative is rename from Project Name)