Tried using custom firmware builder to add PROBE_OFFSET_WIZARD and a few other things and get the following error when its running....
Errors:
LCD_BED_LEVELING requires a programmable LCD controller.
Build Reference: 1D84418E-6401-11EB-9464-7B8894E88FA6
I didn't check the build logs, but this doesn't yet work on the DWIN screen of the Ender 3 V2 - the screen doesn't yet meet the requirements.
There's an effort to improve all of these - but right now, its not quite there.
Odd... I have firmware from smith3d that has the Offset-wizard set and works fine. The main issue I was jumping over to yours was there is something with their firmware working with Octoprint. Works in Octoprint but the display on the printer doesn't update nor allow for tuning on the smith3d firmware.