The only relationship currently implemented is "workflow -> node," but the module has the theoretical capability of supporting any kind of workflow relationship.
Installation
Unpack in your modules folder (usually '/sites/all/modules/')
Enable under Administer > Site Building > Modules
Here are some key features of "Workflow Relationships":
· Administration UI, that allows to setup relationship table
· CTools/Panels integration - the set up relationship is available as a CTools relationship, which means that a "related" node (or part of it) can be shown in a Panel pane placed in Panel containing source node context
Requirements:
· Drupal 6.x
· Drupal Workflow Module
· Drupal Hierarchical Select Module