but cant catch that only one way for service queue or I can experiments with that?

UnevenOstrich23 I'm not sure what exactly is the question, but if you are asking weather this is limited, the answer is no it is not limited to that use case.
Specifically you can run as many agents in "services-mode" pulling from any queue/s that you need, and they can run any Task that is enqueued on those queues. There is no enforced limitation. Did that answer the question ?