Hi Dave,
Thanks for your interest in Syncfusion products.
GridGroupingControl moves the horizontal scrollbar using the keybord arrows with the help of TableControlKeyDown event and ScrollCellInView() to perform the
scroll action when the cell is not in focus.
Please refer the code below.
http://files.syncfusion.com/support/samples/Grid.Windows/7.1.0.21/F79887/main.htmLet me know if you have any queries.
Regards,
Lingaraj S