I’m sure people have done that with the original wasteboard, but I’m not one of them. I made a 1/2" sacrificial wasteboard and routed a flat pocket into it. The video for it is in this thread: X-Carve Maintenance/Troubleshooting Videos - Add Your Own!
I didn’t have to mess with exporting/importing g-code, I just told Easel to make a large square pocket .050" deep. I used the replicator app to put holes all the way through to the inserts as well, there’s an important lesson to be learned in that video. 