The Item Properties dialog box enables you to Add a new item or Edit an existing one in the combo box or list box Item section.
Item Label. Specify an item label that will be listed in the combo box or list box.
Item Value. Specify an item value.
You can set an item to be selected by default in the list by checking the Initially Selected check box.
Note: Only one item can be initially selected in the combo box. In the list box, one or more items can be selected. It is based on checking the Allow Multiple selection box in the List Box Properties dialog box.