In the Maps app .
If you don’t see next to the favorite.
Depending on the location, you may be able to make the following changes:
Rename the favorite: Tap the title, then enter a new name.
Change the address: Tap the address, then tap Open Contact Card.
Delete the location from your favorites list: Tap Remove Favorite.
Change the label: Tap a label type.
Tap Done.
If Maps isn’t precisely locating your home or work place, you can help improve directions to and from your home or work by correcting the location.
On the search card, tap More above the row of favorites, then tap Add a transit station or stop to Favorites