I would like to "group" layers in CorelDraw

I use CorelDraw x6 to make blu-ray menus. Often blu-ray menus require in excess of 100 layers, Chapter 1, Chapter 2 etc.. Each button has 3 states. Normal (not selected), Selected, and Activated. This means that 10 buttons requires 30 layers.

I would like to "group" layers in much the same way as PhotoPaint does with "Objects" (layers) in the Object pane.