Dan mentioned a workaround that may work , but won’t know how to make one until the unit arrives.
@Dan
"Although I must recommend against it for safety reasons, opening the lower door in front and overriding the safety interlocks by placing magnets against the sensors would not void your warranty.
The slot in the back, however, doesn’t have a corresponding door."
A sled to hold the piece at the correct angle for chamfering could be built, but it probably wouldn’t be effective for anything greater than 1/8" thick material, given the 1/4" max cut depth. You could slide the assembly into the front side of the GF if the laser can get close enough to the front edge of the cabinet to do a “trim” of the piece. I would definitely recommend getting the correct laser safety glasses before trying it though!