Hi Siva,
If you see nothing under ME53N, the pushbutton GOS
--> Workflow --> Workflow overview, then I am pretty sure that no workflow has been started. You need to check the configuration, e.g. trs SWETYPV (business object BUS2105 if you have overall release or BUS2009 if you have itemwise release, event RELEASESTEPCREATED).
But there are more places where the settings for the WF shall be made. Maybe someone have a checklist to share?
BR
Raf