The machine can be homed to a different position, but it will involve moving the limit switches and changing lots of commands.
There is an easier way, you can let it home to the normal position, and then add a command so it will auto-move to the position you want it to after it has homed.
To do this go to Files > System > Open homeall.g
Add this line to the end:
G53 G0 X0 Y0 ; Move to the front left corner
Save and close.
You can change the number after the 'X' and 'Y' to the machine coordinates you want the machine to move to