Sorting sub-summary fields with script trigger

[crazybake]

My solution finds houses in neighborhoods, then through sub-summary parts it will show:

Neighborhood

Main street

Each house

Members of house

I am trying to create a drop down that will reorder the Main street sub-summary through a script trigger. I have the drop down showing the proper fields. How can I sort the data so that the sub-summary fields keep the data showing correctly, but reorders the data.

[crazybake]

To revise the question... Is there a way to create a calculation that will "jump" to the portion of the list view. Using the example above I have all of the Main streets as a sub-summary field with houses in list view. I want to able to "jump" to a main street within the layout.