I am not sure what you mean “in background”.
If you follow the instructions in the README, you run all service tasks in sequence.
If you want to run the tasks individually, you can add the name of the task witch option t:
robot -d logs -t "Invade Gaul" run_simple_invasion.robot
In this example, the tasks don’t wait for process instances. If their topic does not provide a process instance they quit immediately. If you want the robot task to wait for work, you can add asyn_response_timeout to the fetch workload statement:
${process_variables} fetch workload invade_gaul async_response_timeout=30000
If you have trouble, getting the guide in the README let me know. Also, if you want to experiment further, see all available keywords/commands for CamundaLibrary here: https://postadress.gitlab.io/robotframework/robotframework-camunda-mirror/latest/keywords/camundalibrary/#library-documentation-top
Regards, Markus