There are two ways of creating workflows: from scratch or by cloning an existing workflow.

From scratch

In order to create a new workflow one would need to navigate to "Workflows" page using the left-hand sidebar, and then click on "Create New" button - .

For the demonstration of how to add a Subworkflow/Unit see the animation below.


The video below demonstrates how to clone a workflow and then edit to extend and add post-processing subworkflow.