You can do it via MiniMEs or on an ME -- Same way, either way.
Key 1 (source camera 1) - Key 2 (source camera 2)
Make both keyers a DVE by pressing the DVE button as the key type (hold it down and press RESET-- too make sure they are normalized)
Press Key 1 - then type DVE again -- use joystick to move picture to where you want it. (Repeat for Key 2)
SAVE the effect as an EMEM - so you can recall (if needed)
Send to screen via an AUX (either the ME or MiniME you built your effect) and you can breakaway to something else if you desire.
#Carbonite