Hi Larry,
Thank you for your interest in Syncfusion Products.
It is not possible for partial tabs in vertical alignment and another partial tabs in horizontal alignment, but we have solution for your requirement.
Please refer the below sample for your requirement[Panel and tabcontroladv].
http://websamples.syncfusion.com/samples/Tools.Windows/F75572/main.htmPlease let me know if any concern.
Regards,
Hema