<workflow_chain>
 <chain>
  <type>Hosting Subscription</type>
  <workflow>edit_workflow, instance_slap_interface_workflow</workflow>
 </chain>
 <chain>
  <type>Slave Instance</type>
  <workflow>edit_workflow, instance_slap_interface_workflow, item_workflow</workflow>
 </chain>
 <chain>
  <type>Software Instance</type>
  <workflow>edit_workflow, instance_slap_interface_workflow, item_workflow</workflow>
 </chain>
</workflow_chain>