How to use ToC object for building Customer data??

My goal is to build an .exe application which consists of list of Manufacturers of various categories.

These Categories may have sub-categories. If I were to select/click each category, it should list all the names of companies. And finally, upon clicking the company name, should display its Address/Contact details on the Right side

Lectora Version I have is: 2010 Enterprise Edition vX.6 (8458)

Please see the inserted pic/image sample below.

[ATTACH=CONFIG]289[/ATTACH]

I inserted the ToC objects & was able to make left-side (ChapterA, ChapterB.. & their sub-chapters)

I want to do the following:

(1) User Clicks on ChapterA--> all sub-chapters get displayed automatically in list.

[This works fine]

(2) Now, as shown in the attached pic, User clicks on leaf-level sub-chapter (in this case ChapterAart3)

This automatically should populate & display All items in it. In this case, Item1 ... Item7

(3) User then goes further & clicks "Item3" --> This automatically populates window on right-side with its details

How can I achieve this?

Thanks