Dear Abhishek,
Hope you are doing good.
The only way to do this will be to use NWDS and amend the SAP_ESS SAP SCA component and amend it as per your needs. Once this is done, deploy it (check SAP KBA 1715441 ).
This is the only option available as you wish to amend standard content .
Hope this helps.
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Kind Regards,
Hemanth
SAP Product Support
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Join me online: http://scn.sap.com/people/hemanth.kumar/content