WCM- Permit Extension for applications and Op WCD

Hi SAP WCM Experts

I'm doing WCM(Work Clearance Management) enhanced model implementation. I've configured permits like Cold Work, Hot Work permits etc as applications.

I want to ask this "How to configure extension of application in this "?

E.g If permit validity is 1 day and it needs to extended for more 3 hours becuase work has not finished as of now. Is there any possiblity to do this with standard settings in WCM.

I heard there is some standard functionality available from EHP5 to do this activity.

Please advise.

Regards

Rahul