InDesign Server LaunchAgent

[#1]

We are running InDesign Server on macOS and need to start it using a LaunchAgent in order to get it to produce log files. We used to be able to do this up until the 2019 version, recently I installed 2020 hoping it would work again but still no joy. The only documentation about this I can find is for InDesign Server CS6. 

Am I missing anything obvious that would stop it launching via a LaunchAgent? Alternatively is there another way to get InDesign to produce log files?

[#2]

We are running InDesign Server on macOS and need to start it using a LaunchAgent in order to get it to produce log files. We used to be able to do this up until the 2019 version, recently I installed 2020 hoping it would work again but still no joy. The only documentation about this I can find is for InDesign Server CS6. 

Am I missing anything obvious that would stop it launching via a LaunchAgent? Alternatively is there another way to get InDesign to produce log files?