Entering customer info in BO

We need to have the option to only enter in the customers first name and phone number in BO. You can do this on the POS, but if you want to add customers in BO, you have to enter in more than just the first name and phone number. If you enter the information on the POS incorrectly and you want to edit the customer info you have to enter a last name and email address and not all merchants have this info nor do they want to have to enter this.