Hi Prashant,
You may use Transaction Launcher. You could follow below steps:
1. Create URL and its parameter Tcode: 'CRMC_IC_LTX_URLS'.
2. Use the same in Transaction Launcher wizard.
3. Create button in method 'IF_BSP_WD_TOOLBAR_CALLBACK~GET_BUTTONS' of overview page.
4. Create action for the button, and call the transaction launcher object in this action method.
Let me know if you have any question regarding any of the step.
Regards,
Sanjay