All steps are very well explained in DaHai’s video, I capture them here for my own convenience.

Before these steps are made, heat up the hot end and remove the filament. While the hot end is still hot clean it with a wire brush. You want to measure the distance between the hot end and the heated bed. Left over filament can mess with that measurement.

  1. Install/connect the leveling probe (I have version 2).
  2. Launch Prepare / Delta Calibration / AutoCalibration.
    This will take a long time, it will repeat the process at least 7 times.
  3. From the menu selector -> Prepare / Delta Calibration / Set Delta height.
  4. From the menu selector -> Prepare / Delta Calibration / Store settings.
  5. REMOVE the probe.
  6. From the menu selector -> Prepare / Auto Home.
  7. Change Prepare / Move Axis / Soft Endstops to Off
  8. Using the Move Z-axis menu, hot end down, first in large steps (10 mm) to ~10 mm height, then in smaller 1 mm steps to ~1mm height.
  9. Slide a new piece of paper underneath the hot end. In the menu switch to the smallest 0.1 mm increments until the paper cannot move freely. The paper should have a slight resistance. If you have a feeler gauge then use the 0.2 mm shim.
  10. Once the paper or gauge cannot move then back out the Z height. For example, if the paper is stuck at 000.4 mm but loose at 000.5 mm then record the height at 000.45 mm. Make note of that height. The height may be a positive or negative number.
  11. From the menu selector -> Prepare / Delta Calibration / Delta Settings and adjust the Height setting by SUBTRACTING the Z offset from step 10.
  12. From the menu selector -> Prepare / Auto Home.
  13. From the menu selector -> Control / Motion and adjust the Probe Z-offset by SUBTRACTING the Z offset from step 10.
  14. From the menu selector -> Control / Store Settings
  15. From the menu selector -> Prepare / Auto Home
  16. From the menu selector -> Prepare / Move Axis / Move Z-axis and manually check your new height. Carefully lower the hot end and take care not to crash into the bed.
  17. From the menu selector -> Prepare / Auto Home
  18. Reattach the probe.
  19. From the menu selector -> Prepare / Level Bed
    This will be quick as it is just one pass with the new adjusted height.
  20. From the menu selector -> Control / Store settings
  21. From the menu selector -> Prepare / Auto Home
  22. Remove the probe.

That should provide a calibrated printing surface for the Anycubic Delta.