If you look in the Elapse Time column, you will see that it is counting up to show the contribution of each of the web requests involved in the fulfillment of your click action. You can click the drop down next to each entry to see a breakdown of where the time was spent.
Good afternoon, Tarun A.!
Network Contribution, Client Contribution, and any Third Party Resource Contribution would be your answers. It looks to me like Network Contribution calculation is not enabled in your UEM settings.
From the documentation, "Network contribution is only available if the PurePath visit possesses a bandwidth value. Network contribution is the estimated time that was spent to transfer resources with an immediate impact on the user action response time. Specifically, the network contribution is the sum of the file size of all requests divided by the bandwidth value (bytes per second)."
To calculate the network duration you must enable response size capturing and bandwidth detection. Response size capturing is disabled by default, but you can enable it in the Web server, Servlet or ASP.NET sensors. Bandwidth detection is disabled by default. To enable it click System Profile > User Experience, then check the box for Bandwidth Calculation. See System Profile for more information.