Ivanka,
Ed means the little button with a folder icon on it that's typically displayed just to the right of a path control. If there is no little folder button, then right-click on the path control itself and select Visible Items >> Browse Button.
You don't actually need to see the browse button to change the browse options, since you can right-click on the path control itself, but you'll need the browse button if you want the user to be able to choose a location interactively.
Since the path control is designed to handle so many different situations, its interactive use can still be pretty mysterious to someone who isn't familiar with LabVIEW widgets. To specify that new folder interactively, the user will have to type its name into the "File Name" box and then click the Save button. Pretty non-intuitive. Maybe other people have tips for making it more intuitive...
--John