On CallHub, you can add more than one number and use it as a Caller ID for your campaigns. This can be done from the Numbers section by validating a new number. You need to navigate to Numbers > Validated > New and add the number. Once done, you will receive a call and you need to enter the validation code displayed on the screen.
Note: The number you are trying to add should be capable of receiving incoming calls.
If you have any queries apart from this, write to us at firstname.lastname@example.org.