Pausing and restart

Two different but related items. I wanted to pause my X carve last night and have it resume where it stopped. Is there a way to do this correctly? What happens if you break a bit and don’t need to start the carve all over. Is there a way to back the carve progress up a few minutes then have it resume?

1 - Press Pause button, make sure USB connection is “live” by not turning off controller or PC. Resume when ready
2 - Recalibrate Z of the same spot as, if you have homing enabled/done prior to carve X/Y is stored and can be re-used. Z need to be recalibrated obviously
3 - No, not in Easel