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Selecting a UI element and property

Use the Basics area of the Control tab on the Control form to specify the control or category of property type used with the control.

In the UI Element list, select a UI element. For Editable/Read Only and Action control modes, select the type of control that appears on the layout. For Read-Only mode, select the type of presentation of the property value. Your selection filters the Format, Options, and Behaviors areas on this tab.
Select a single-value property or text string that contains the value that you want to associate with the control. This option does not appear in Action control mode.

When a property is computed through a Declare Expression rule, the system presents the value as read only in the control's read-only format.