Yes when you switch to D2D on the iPad and see the GS911, log into it, it will bring up the menu and select network
Your home network and any others around should be seen and you then select your home network and add the pass phrase etc and save it, there is a button to connect to it. When you hit the connect button it will disconnect the D2D mode connection of course
If you dont see your home network there is a button to manually set up a network and you can enter your home network SSID and pass phrase, save it and use the connect button to see if the GS911 connects