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 ecflowview.
The process is described with the associated ECFLOW online course.