By default any data received on port 1 will be output on port 2 and over Wi-Fi / Bluetooth.
Also by default any data received on port 2 will be output on port 1. To multiplex that data received on port 2 over Wi-Fi / Bluetooth as well, please send the following command:
$PSMT,0,3,0x2C75B2FA,0,nvseti "nmea2mux"^2C0x5^2C2^2C0^2C0,0*7C
The command can be sent via the Serial Data tab in proAIS2.