Thanks for contacting us.
Currently, the feature that you describe is not implemented in the RadJumpList
control. However, we think that this would be a nice addition to the control and will log it in our TODO system for implementation. We have updated your Telerik points for the useful hint.
For now, you can use the IsGroupPickerOpen
property to show the groups and let the user pick one. You could expose a UI component which your users could utilize the open the group picker at any given time, even if a group header is not visible at the current scroll position.
I hope this helps.
the Telerik team
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