What is the issue you are running into?
Here is what the relative lines from my config.h look like:
#define AUTO_BED_LEVELING_GRID
#if ENABLED(AUTO_BED_LEVELING_GRID)
#define LEFT_PROBE_BED_POSITION 40
#define RIGHT_PROBE_BED_POSITION 170
#define FRONT_PROBE_BED_POSITION 40
#define BACK_PROBE_BED_POSITION 140
#define MIN_PROBE_EDGE 10 // The Z probe minimum square sides can be no smaller than this.
// Set the number of grid points per dimension.
// You probably don't need more than 3 (squared=9).
#define AUTO_BED_LEVELING_GRID_POINTS 2
#else // !AUTO_BED_LEVELING_GRID
// Arbitrary points to probe.
// A simple cross-product is used to estimate the plane of the bed.
#define ABL_PROBE_PT_1_X 15
#define ABL_PROBE_PT_1_Y 180
#define ABL_PROBE_PT_2_X 15
#define ABL_PROBE_PT_2_Y 20
#define ABL_PROBE_PT_3_X 170
#define ABL_PROBE_PT_3_Y 20
#endif // AUTO_BED_LEVELING_GRID
// Offsets to the Z probe relative to the nozzle tip.
// X and Y offsets must be integers.
#define X_PROBE_OFFSET_FROM_EXTRUDER +35 // Z probe to nozzle X offset: -left +right
#define Y_PROBE_OFFSET_FROM_EXTRUDER -7 // Z probe to nozzle Y offset: -front +behind
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0 // Z probe to nozzle Z offset: -below (always!)
#define Z_RAISE_BEFORE_HOMING 0 // (in mm) Raise Z axis before homing (G28) for Z probe clearance.
// Be sure you have this distance over your Z_MAX_POS in case.
#define XY_TRAVEL_SPEED 4000 // X and Y axis travel speed between probes, in mm/min.