Two xbox - two users - Where do I enter another user's apitoken?

[CaseyCZ]

  "devices": [
            {
                "name": "Xbox X",
                "ipaddress": "§§§§§§§§§",
                "liveid": "§§§§§§§§§§§§",
                "inputs": [
                    {
                        "name": "Youtube",
                        "aum_id": "GoogleInc.YouTube_yfg5n0ztvskxp!App",
                        "title_id": "07459769"
                    },
                    {
                        "name": "Kodi",
                        "aum_id": "XBMCFoundation.Kodi_4n2hpmxwrvr6p!App",
                        "title_id": "675D7164"
                    },
                    {
                        "name": "O2",
                        "aum_id": "D8378DF7.O2TVGo_tqn3m7kee4xc8!App",
                        "title_id": "699B0CEA"
                    }
                ]
            },
            {
                "name": "Xbox",
                "ipaddress": "§§§§§§§§§§§§",
                "liveid": "§§§§§§§§§§§§",
                "inputs": [
                    {
                        "name": "Youtube",
                        "aum_id": "GoogleInc.YouTube_yfg5n0ztvskxp!App",
                        "title_id": "07459769"
                    },
                    {
                        "name": "Kodi",
                        "aum_id": "XBMCFoundation.Kodi_4n2hpmxwrvr6p!App",
                        "title_id": "675D7164"
                    },
                    {
                        "name": "O2",
                        "aum_id": "D8378DF7.O2TVGo_tqn3m7kee4xc8!App",
                        "title_id": "699B0CEA"
                    }
                ]
            }
        ],
        "apiToken": "§§§§§§§§§§§§§§",
        "platform": "Smartglass"
    }
],