Thanks so much!
Embedded fax is there with the other services such as printing, copy, workflow scanning, etc. I think you are right about the permissions.
The Guest screen on the printer only has 4 icons, copy, id card copy, print from and workflow scanning
When logged in as AFHC (my business acronym) or admin there are 8 icons:
copy, id card copy, print from, fax, workflow scanning, internet fax and server fax.
We really only use need fax and copy, to be honest.