TAdvSmoothExpanderGroup - how to use

I cannot find nothing in the docs (TMS SmoothControls.pdf and help file) that explains how to use the TAdvSmoothExpanderGroup component (or even what it is typically used for).  Can anyone fill me in ?

I also have looked for the samples/demos folder, but there is no project that use this component.
Maybe, TMS Team need to add new project to show us about how to use it.

Thank in advance