You just need to drag and drop your 5 workflows in the main workflow, link them in order and on each subworkflow add an exception handling link to a remediation workflow.
All these mechanisms are available in vCO. You need to define what to do in case of exception and how to remediate. vCO include several library workflows were often remediation is used to delete the objects that have been created in a failed workflow. You can use these examples as a starting point.
Christophe.
If my answer resolved or helped you, please mark it as Correct or Helpful to award points. Thank you! Visit http://www.vcoteam.info & http://blogs.vmware.com/orchestrator for vCenter Orchestrator tips and tutorials - @vCOTeam on Twitter