Hi Navin,
youn oun need to enhance the respective views to implement this requirement. Have you ever doen this? The following wiki entry gives some details on how to do this: How To Enhance a Web UI Component in SAP CRM - CRM - SCN Wiki
In order to find out which view to enhance you need to use the appropriate keyboard short cut: SAP CRM: Webclient UI - useful commands like F2
Next you you need to find the event handler that is triggered when the create disput button is clicked.
Finally, have a look at how the functionality to add an item to the clipboard is implemented in the SAP standard and implement similar code in the event handler of the enhanced component. You need to make sure that first the code of the super method is executed.
Christian