How do you get the 4wd to change back to 2h in the 1998 ford expedition Eddie bower?

With the engine running , if you are in A4WD ( automatic 4 Wheel Drive ) or 4 H , just turn the selector dial to 2 H . If you are in 4 L , with the engine running and the Expedition stopped with your foot on the brake pedal , shift the transmission to NEUTRAL , then turn the selector dial to 2 H , then put the transmission in gear or park