Instructions may be different per phone, so if these steps do not work for you, please refer to your phone user manual.
- Press 'Contacts'
- Select Add New Entry
- Press 'OK'
- Input contact's name and press 'OK'
- Scroll to the number field
- Press 'OK'
- Input the phone number
- Press 'OK'
- Repeat steps 5 - 8 to enter additional numbers for the same contact name