How to add contacts to scan mode for Epson WF-2540?
The contacts can be set up using the PC-FAC Contacts button in the main interface of the startup software. This means you will have to install the full package for the Epson product before you can access the software. Access the official website and download the full driver package. After its installation, download the user guide (PDF format) which explains where and how to set up the contacts. The required information is found at page 187.