If you right click on the part of your fixture page where it displays the name of your fixture a menu will appear and at the bottom of this menu you will find a scene fade toolbar option. Select that option. Now to use that feature simply click on the scene you wish to fade and then check the check box to the left of the toolbar. Only use a time in the second box for fade time. The other times are various hold times mainly used for par cans.
I hope this is clear enough. I cannot post any screen shots I am away on vacation but I will do so when I come back tomm.
Sincerely,