Hi John,
Thanks for your interest in Syncfusion Products.
Please refer the following sample that serializes the schema of a GridGroupingControl to a memory stream. If you run the sample, you can change the column order and widths, then save this schema by pressing the save button. Then you can again change the column order or widths and then use the Load button to load the saved schema from the stream.
http://websamples.syncfusion.com/samples/Grouping.Windows/F70929/main.htmPlease let me know if have any concerns.
Regards,
Fathima