you have to toggle "design mode" - it's a toolbar button that has a
triangle, pencil & ruler on it. once that is pressed, you can right
click the toolbar & click on "properties".
find "multiline" and change that to true.
the design mode button is on the control toolbox toolbar - you can
find that toolbar (if you don't already have it visible) by right
clicking up in your toolbars and choosing "control toolbox".

susan