By calibrating the Z-axis offset, you can ensure that the left and right extruder always work at the correct and consistent height during printing, avoiding problems such as poor first-layer adhesion, nozzle scraping the platform, and head bumping.
Tap Calibration > Z Offset Calibration > Start.
Follow the prompts on the Touchscreen, rotate the thumb wheel of the right extruder to align the Z-axis offset of the right extruder.