Fade out Sound at the end

Hey guys
First of all: Sorry for my bad english ^^
Now the Problem: Actually I was a Adobe Premiere Pro user. Now I am trying to use HitFilm 2 Express. I am really surprised how good it is. But i can't find a option to fade out the sound at the end. I hope you know what I mean xD.
I would be very happy if you could help me :D