How to modify or replace Request URL in post method

Thanks , will see this video

In my Test Case 1 .. i am right click on test step where select the Add STEP options and select the REST Request then getting one pop up "Specify name for new step" ..then enter Rest request step1 and click on OK button then again get one pop up to "select Rest method to invoke for request"...drop down ...with included login URL ( "http://www.abc.com/public/login")

So Here if i need to add other Request URL or end point like  "http://www.abc.com/api/medicalinfo"

So how i can add this new URL.

Thanks

Mahadev