Once you have installed and configured the Process Launcher service you can start it by following these steps:
When you installed the packages (deb or rpm), a Process Launcher service file was placed in the /etc/systemd directory.
Reload the process launcher service using sudo systemctl daemon-reload.
Enable the process launcher service using sudo systemctl enable ansys_process_launcher.service.
Start the process launcher service using sudo systemctl start ansys_process_launcher.service.
Check the status of the process launcher service using sudo systemctl status ansys_process_launcher.service.