Thank you for contacting Telerik Support.
I am not quite sure about what exactly is your questions. Could you please elaborate a bit more on the matter, so we could address your inquiry appropriately?
If you wondering about, you to manage the visibility of the subsequent controls on your form, base on the selected of the ComboBox in question, I would advise you to use the OnSelectedIndexChanged event of the control, in order to use the handler to set the Visible property of the other controls.
In the attachment you can find a simple example on how this could be achieved. You can create a simple if-else block, where you can manage the visibility of the controls, base on the selection of the ComboBox.
Hope this information helps.
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