How can i chanche de fax number

you need to go into the menu and look for settings fax the n look for the fax ID here you can change the number and the header the header is the name you want printed on top of the page ie your company name.. you can find the sections by looking on the right hand side of the display and you should see a button called reports here you can print off the section rep[ort which tells you where to find the settings in teh menu