To manage multiple locations on your iPhone, navigate to Settings – General – Contacts – Locations and toggle on Show My Location. This will enable your iPhone to share its current location with you.
If you want to set specific locations for individuals, create a new contact from the Contacts app and tap the “Edit” button. Add the person's name, phone number, and email address, then select their image or upload one. Tap “Add Location” and enter the location you want to associate with that individual.
Once set up, you can view all your associated locations in a map view from the Locations tab within Contacts. You can also share your current location with others by going to the Share button and selecting “Share My Location.'