Naveen,
From CA Process Automation there are two ways you can view a running process.
1. When you start a process instance within the UI manually, you are prompted with a pop up asking if you want to monitor the process
2. Navigate to the Operations tab and locate the running instance that you would like to view and double click on that instance
If there is a specific set of processes that you want to watch and you have several hundred different processes that could be running at the same time, you can setup a Process Watch object to make finding the instances that you need to review much simpler.
Please see the documentation regarding the Process Watch objects here:
Process Watch Objects - CA Process Automation - 04.3.02 - CA Technologies Documentation
~Jennifer