Hi Jim,
Thanks for using Syncfusion products.
You can achieve your requirement by using the TargetNameInDockedMode property . Please find the sample for this in the following location.
Sample:
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=Sample-1696106842.zipPlease let us know if you need more information
Regards
Surya Narayana