Hi Rishi,
As far as I understand, you mean combo box controls, don't you? These controls let you either type the needed value into the box or press the down arrow to select the needed item from the drop-down list.
To select an item of such controls, you can use the following approaches:
1. Use the ClickItem action.
2. Simulate typing an item's caption.
3. Navigate within the list of combo box items using keyboard shortcuts and select the needed item by simulating the UP and DOWN arrow keys.
For more information, please refer to the Selecting Combo Box Items help topic.
