You can share your contact within the "Accounts or Contacts".
Share a Contact
- Click on “Contacts”.
- Double-click to open and view particular contact.
- Find the option "Sharing" on the right side of the form.
- Click on Manage button.
- Change the option to Private, All users can View/Edit or Custom - Editor/Watchers
- Start typing the name of a user(s).
- Click the "Save" button to finish.