Find “Home” under Nav > My/Recent Destinations; do not click it. Select “Edit Entry” after selecting it, then highlight it and press Option on the controller.
Have you ever used a navigation system? To go through the entire process here would take a while. You select “Enter Address” on the navigation screen by pushing the iDrive two times to the left (or something similar). Then you choose the state, the city, the street name, and finally the street number. You must press down on the controller for each field to enter an alphabetical character. After accepting the address, click “Start Navigation” (or guidance). Your route becomes operational and you see some ETA details after a short while. At this point, you can then choose one of your memory buttons on the “radio” and press and hold it to store the destination.