How to access WiFi networking from macOS High Sierra initial enterprise login screen (before logging-in)?

How to access WiFi networking from macOS High Sierra initial enterprise login screen (before logging-in)? If there is no wired-LAN connection & no WiFi access, then new users can not login initially. This action with WiFi access does not appear to be available, but should be added by Apple-Mac developers with upcoming macOS v10.14 Also we here at Temple University (Information Technology Services) would like to assist with this important macOS feature addition too.


*NOTE: As an example, Windows 10 enterprise login screen allows access to WiFi (before login to domain.)