If your mobile number changes, you are responsible for informing the Customer of that change. Trying to fill out my phone number on a job form.No, I can't type it. Complete this section ONLY if you want to change or add a primary beneficiary. Otherwise, if you do not complete this section, your primary. Write a letter to the Human Resources Department stating that you need to change your phone number, but your email is still the same. This is the start of the document edit form. Save. Add. To upload files, you will need to install Silverlight.