Basically, there is no option to achieve this functionality out-of-the-box. You can use custom code to achieve the desired functionality. For example, you can get a reference to a particular group header item:
and according to the text, set its expanded state to true. Additionally, you can move the logic in the PreRender event handler, and get a reference to all the gridGroupHeader items on the current page, to check the text, and determine the expanded state accordingly.
I hope this information helps.
the Telerik team
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