Fax listing as both Phone and Fax on Cover Page

We only have a fax line with RingCentral. We are a small business. In Settings we have set up the cover page info. There is no spot to choose what phone number to list. However, it automatically lists my fax number as both the phone and fax on the cover sheet. This is misleading for the recipients of my fax line. How can I either remove the phone number tab from the cover page (contempo) or replace with a phone number of my choice? Please give me the option in settings to edit the phone number on the cover page.