Glück & Kanja provides two different approaches to WLAN packages which allow the configuration of WLAN profiles via RealmJoin.
Both packages contain a wifi.xml file, that can be configured with the assignment arguments in the RealmJoin portal.
The editing is embedded within a PowerShell script and the configured wifi.cml is added as wifiCustom.xml to the device using netsh:
netsh wlan add profile filename = "wifiCustom.xml". Customer-flavored WLAN packages can be requested from Glück & Kanja.