You can login to Desktop system using your Delphi domain account credentials.
You may use
Delphi or
NICE WiFi depends on room you located.
The
best practice - when you reserve a room in advance. You may ask office
manager to book preffered conference room for time period you
needed.
Or do it by yourself using Outlook app. this way:
Step.1

Step.2

Step.3

Once you recevie confirmation from Exchange server - you're complete and confirmed your booking.