Landbruiser1

hi new to this forum been looking for a 1995-97 gxl 80 with a 1fz-fe auto dual fuel i have found one but i have a few questions, when you select low range to high range, do you put it in neutral or park , besuce this one crunches in neutral but no in park when selecting the gear, and when do you select the center difflocking button? anny hel appreciated