Hi,

There are no properties for this. Depending on what you want, you might be able to achieve it with a CreationFilter. But without more information about exactly what you are trying to position and where you want to position it, it's hard to say.

If you want to try it out, I recommend get the Infragistics UIElementViewer Utility.

This utility is a huge help when working with CreationFilters because it allows you to see the UIElement hierarchy of the control.

Basically, you just need to find the UIElement that contains the options and trap the AfterCreateChildElements for that phase. Then you can re-position the child elements wherever you want with the parent by setting the Rect.

Here's some quick sample code I threw together:

this.ultraOptionSet1.CreationFilter = new MyOptionSetCreationFilter();

public class MyOptionSetCreationFilter : IUIElementCreationFilter
    {
        #region IUIElementCreationFilter Members

        public void AfterCreateChildElements(UIElement parent)
        {
            if (parent is OptionSetEmbeddableUIElement)
            {
                foreach (UIElement element in parent.ChildElements)
                {
                    ValueListItem item = element.GetContext(typeof(ValueListItem)) as ValueListItem;
                    switch (item.DataValue.ToString())
                    {
                        case "ValueListItem0":
                            element.Rect = new Rectangle(0, 0, element.Rect.Width, element.Rect.Height);
                            break;
                        case "ValueListItem1":
                            element.Rect = new Rectangle(20, 50, element.Rect.Width, element.Rect.Height);
                            break;
                        case "ValueListItem2":
                            element.Rect = new Rectangle(15, 70, element.Rect.Width, element.Rect.Height);
                            break;
                    }
                }
            }
        }

        public bool BeforeCreateChildElements(UIElement parent)
        {
            // Do nothing
            return false;
        }

        #endregion
    }

I have also attached a sample project with the same code.