Rapid Rate Calibration

Hello, I’m trying to calibrate Carveco Maker to my 30x30 in regards to Rapid Rate. How do I go about finding that number so my toolpath summary predicts a more accurate time?
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You can view the rapid rate in the firmware settings 110-112 in gSender. The default rate for the X and Y is 4000mm/min or 66.67mm/sec.