Hi Chandan,
Thanks for your help. Here are my steps:
1, Login into C4C as Administrator and go to Administrator page (Silverllight version)
2, Create a business role, and assign those four work centers to the new role
- Add WC Partner Development.
- Add WC Business Analytics.
- Add WC Business Configuration.
- Add WC Application and User Management.
3, Assign one user ( newly created or original existing ) to that new business role
4, Laugh Cloud Application Studio , give address "myxxx.crm.ondemand.com" and the user mentioned above and its password.
5, All good.
Hope it helps others.