Out of the box, foreman ships with orchestrator and a single worker If you have Katello, you will get an additional worker for processing of the host queue
root@modest-gator:~# ls -l /etc/foreman/dynflow/
total 1
-rw-r--r--. 1 root foreman 51 May 14 07:35 orchestrator.yml
-rw-r--r--. 1 root foreman 59 May 14 07:35 worker.yml