How do I set up Wi-Fi Direct mode on the ET-3850U?

Press the home button, select the network icon, press OK, then select Wi-Fi Direct and scroll down to select Start Setup. You can then connect using the Epson Smart Panel app or select Other Methods for iOS (scan the QR code) or other devices (connect using the SSID and password shown on the LCD screen). Note that Wi-Fi Direct supports up to 8 devices, but it is not recommended if the product needs to be connected to the Internet for the ReadyPrint program. (Page 40-41)