1. Navigate to contacts.google.com
2. Select Other contacts from the left side
3. You can either:
a. Add all Other contacts, or
b. Add some Other contacts
3.a. If you want to Add all Other contacts:
- From the list of contacts, check the top one
- After selecting the top contact, hold down Shift on your keyboard and select users (up to 1000) by scrolling down and checking another box
3.b. If you want to add some of your Other contacts:
- From the list of contacts, check all of the contacts you want to add (up to 1000)
4. To Add to contacts Click the person icon with the +
Note: If you have more than 1000 Other contacts you will need to do this until you go through all of them