Yes, you can add contacts that are visible only to you. To do so, follow the steps mentioned below:
1. Login to your MyOperator panel.
2. Click on “Manage” at the top.
3. Go to functionality and click on ’’Contacts’’.
4. Add the name, phone number and email id of the caller. Now, to ensure that the contact is visible only to you, click on ‘’Only me’’ under the visibility option.
5. Click on "Save".