Hi Ken,
From what I understand, you have several tab groups in your TabbedMDI application where every tab in one group is associated with a tab in some other group, and when one of these tabs is activated, you want the associated tab also to be activated. I have created a
test sample that illustrates the same here. Please refer to it and let me know if this helps. We appreciate your interest in Syncfusion products.
Regards,
Guru Patwal
Syncfusion, Inc.