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In the Tree block of the ribbon, select the Dropdown type and create the item as child of your ribbon's blocks. Here you can give the select button a name and an icon. Save the changes.
Next, to populate the control, you can add Items to it as children. Each will be given a label, a code to identify it, an icon and a related menu function. If you have multiple items in a select control, you can specify their order through the Sequence field.
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