Go to the local map, or skyvector.com and find the ILS frequency of the runway you want to land. Enter that into the NAV1 radio and set your nav source to NAV1. Once lined up with the runway and at 3,200 feet AGL, (assuming you want the glideslope, just hit APPR, and let the plane land. At 10 feet AGL, the A/P will dissengage and assuming you can properly descend 10 feet, you will have a successful autoland landing, This is the procedure for most planes with an autoland function.