Drill Down in table or list records

Drill Down in table or list records


I'm trying to do something like the list of components in the sizings tool.

This is, I have a recordlist which structure is: System, subsystem, type.. This items are records that are linked this way: A system has subsystems, and subsystems have one type.

Now, I need to show all subsystems of a system, without repeating the systems name, and I need a drilll down button to show/hide the subsystems of one system.

Did anyone do something like this?

Best Regards,