It is possible to create Stream Targets to Scheduled Facebook Live Events.
The stream will start publishing to the event as soon as you have the source stream available.
I just tested and it worked fine when using the Facebook stream target destination instead of RTMP.
Thanks for the reply @Alex C - I must be missing something because doing it that way doesn’t work for me. It always creates a new live post and ignores the scheduled live post…
Any chance I could see a screenshot of your settings to compare? I just can’t see how to link the Stream key in the Facebook Stream Target on WSE (non cloud version). Does there need to be a custom property?