Thank you so much and my apology not to read documentation well…
I suppose that… the easiest way to make Job to execute → Start Job
If the developer want to combine the request with more of them → Orchestrator HTTP Request
but either of them need to set roles of Robot correctly based on the documentation, not authentication.
Also using Start Job activity does not have a way to send an input parameter (unfortunately), if you need for your process, then have to use httprequest approach.