The tabs are automatically generated by the ControlDesigner base class. Actually, you may have only two tabs for user/custom controls - Basic and Advanced ( or Properties). Currently you may group the properties only by Category.
You may have more tabs in case you are creating WebUITypeEditors
, which actually can be used as a part of User/Custom controls. In the template of the WebUITypeEditor you could add RadTabStrip control with RadMultiPage and RadPageView.
You could create a control designer and there implement different tabs with settings as we have done for some of the ContentView based controls - NewsView, BlogPosts, EventsView.
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