I looked in pins.h and for my motherboard #80 there is no... "#define PROBE_PIN          -1" like in some of the other motherboard descriptions.

#define Z_PROBE_START_SCRIPT "M340 P0 S680"

#define ENDSTOP_PULLUP_X_MIN true

// prusa i3 settings #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,4000,600} // default steps per unit for prusa i3 rework #define DEFAULT_MAX_FEEDRATE {500, 500, 2, 25} // (mm/sec) #d

#define _CustomEvents_H

UI_ACTION_XY1_BACK is declared in CustomEvents.h (#define UI_ACTION_XY1_BACK     1500).

#define DRIVE_SYSTEM 1

#define Z_PROBE_Z_OFFSET 0

i uncommented #define CUSTOM_EVENTS in configuration so i think it should work without #include"CustomEvents.h"  to uiconfig.h

#define SERVO0_PIN A4 )

#define DRIVE_SYSTEM 1

#define NEW_COMMUNICATION 0

Use#define ENDSTOP_Z_BACK_ON_HOME 20

If we talk about same cooler fan use same pin for both plus add#define SHARED_COOLER 1

#define Z_PROBE_RUN_AFTER_EVERY_PROBE "M340 S1000\nG4 P0"

#define DISTORTION_XMIN -63

#define FEATURE_CONTROLLER CONTROLLER_AZSMZ_12864

#define DISTORTION_XMIN -63

#define Z_PROBE_HEIGHT 0is wrong. You need to set this to the distance of the nozzle to bed when the probe triggers. This is also in eeprom so changing it there is enough.

#define NUM_EXTRUDER 2