Your question is a bit ambiguous, but let me guess:
You don't see the "Run" button.
--> Go to "VI properties..Window appearance..Customize" and put the checkmark back in the "show run button" entry. (Or simply change it back to "default" on the main "window appearance" screen).
(Decorative arrows are in the decorations palette for the front panel. In you want one on the diagram, just cut&paste one from the FP.)