To use ECFLOW you need to carry out a few steps.
Firstly you need an 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 server and your suite is started as required and monitored via a GUI
The process is described with the associated ECFLOW online course.