I set the menu type option in the template to Splitmenu and point it to the menu name of "Mainmenu"
I then create a new menu module, e.g. Joomla Main Menu module and position this to the left. I set the newly created menu parameters to point to the same menu name and set the start level to 1 and finish level to 0.
This should mean that when I click on a parent item on the top yougrids menu, the child items should show on the new left position menu. As I set the level to 1, only the sub child menu option should show on the left position menu.
However for some reason, the left menu is showing the parent levels as well, so it is not taking any notice of the start level in the menu module parameters.
Strangely if I repeat and do a clean installation with version 1.0 Yougrids this function works fine.
Hope this clarifies the problem.