We know that in above example all of our pages use the same default url and then go to their respective pages..

Let us say we have 100 requests in our thread and url changes.We have to change the url in all 100 threads.

Or we can do something else.When we make new threads we can add a http request default and in the server name we can give name of the website.

Then in and every request we keep server name empty but instead we go to path name and define the relative path as /register.php or /login.php etc.

But please note that this http request default is at thread group level and it applies to all requests of that particular thread. We can make it at test plan level so that it applies to all threads and each request in those threads at test plan level.