Set Firewall to allow ....

Hi All

Norton Security v 22.5.2.15 

Windows 7 Prof 32 bit

I have a Brother MFC-J475DW printer. With this printer I have a function where any faxes received can go to my PC. But I need to allow PC-Fax Rx. I'm attaching a .pdf that shows the message Brother gives. I have no idea how to add this PC-Fax Rx to Norton Security. I've looked in Settings (it now works for me) but I can't locate anywhere where I can add. The User manual isn't much help either. I'm stymied.

Thanks for any help

Barb