Normally, a group of child items expands adjacent to its parent item. You may
want to change this setting for a particular group of items, so that the child
items expand somewhere else on the page.
To allow this, the RadMenuItem.GroupSettings class exposes the OffsetX
and OffsetY properties. They indicate the horizontal and
vertical offset of child menu items. The offset is measured in pixels. The
value is relative to the parent item: the default value in both axes is 0 (no
offset).