Hi Chuck, do you have the DVE's assigned anywhere else? Flying a key requires two DVE channels are free, if you only have one available it wont work. If thats not the problem then setup a key as you would normally, then simply hold the AutoSelect and press DVE, both buttons should then be lit. Pressing the button for the keyer you are using will toggle between key and DVE settings, press it until you see the DVE menu - from there you can manipulate the key.
You can store and recall flying keys in the same way as all other effects.
Nigel
#Carbonite