Hello,

A possible approach to achieve this might be by using a 'CreationFilter'.

You could read about it at the following link: http://help.infragistics.com/Help/NetAdvantage/WinForms/2012.1/CLR2.0/html/Win_Creation_Filter.html. Here are some topics from our community which could also help you: http://community.infragistics.com/forums/t/34485.aspx, http://forums.infragistics.com/forums/t/47561.aspx http://community.infragistics.com/forums/t/58186.aspx, http://community.infragistics.com/forums/t/9989.aspx and http://community.infragistics.com/forums/t/50234.aspx. The above approach is not so recommended, because it features element's resizing, creating or removing and could lead to some unexpected behaviors.

I believe that I was able to achieve what you are looking for with the following code sample:

    class CF : IUIElementCreationFilter
    {
        public void AfterCreateChildElements(UIElement parent)
        {
            if (parent is GroupByRowUIElement)
            {
                parent.Rect = new Rectangle(parent.Rect.X, parent.Rect.Y - 10, parent.Rect.Width, parent.Rect.Height);
            }
        }

        public bool BeforeCreateChildElements(UIElement parent)
        {
            return false;
        }
    }

Please do not hesitate to ask if something comes up.