Epson WF-3540 User Manual page 179

Note: You can create up to 60 speed dial and group dial entries combined.
1. Press the home button, if necessary.
2. Select Fax.
3. Select Contacts.
4. Select Add/Edit Contacts.
5. Select Speed Dial Setup.
6. Select the number you want to use for the fax number you are adding.
179