Hi Vishal,
Go to SWETYPV Transaction code, add New Entry for object type BUS2045 and select event type as shown.
Select FM :
CV_SWE_EVENT_MAIL Send mail as recipient of events
I would suggest to create your own Z Fm. Obviously you will need help of an Abaper.
Mark the Enabled field to activate the event linkage.
I have not tested this whole process into SAP.
This link might be useful for you. SAP Library - QM - Quality Management: Workflow Scenarios
Amol.