Running a systemd service

Hi,
I have installed onedrive with homebrew and that works. But I have to onedrive --monitor to sync my onedrive folder.
I learned I need to run a systemd service, to make it automatically sync. How do I do that on Bluefin?
This: onedrive/docs/usage.md at 5ea9369a7d1dded8e5df15655b7914dba815d444 · abraunegg/onedrive · GitHub doesn’t work.

How can I adapt that to work on Bluefin?