To use ECFLOW ecFlow you need to carry out a few steps.
Firstly you need an ECFLOW ecFlow server running.
Next, you need to write a suite definition that shows how your various tasks run and interact. You also need to write your ecFlow tasks/scripts.
Finally, your suite definition is "loaded" onto an ECFLOW ecFLow server and your suite is started as required and monitored via ecflowview.a GUI
The process is described with the associated ECFLOW ecFlow online course.