Depending on what type of request you send, a Get or a Post, the additional parameters will change to reflect the selection. These are parameters that will be appended to the URL following a question mark and separated by an ampersand:
https://www.example.com?GetParam1=Value1&…
Get Parameters
Name: Specify the name of the parameter as it will appear in the request.
Value: Enter the value associated with the name of the parameter.
Post Parameters
Name: Specify the name of the parameter as it will appear in the request.
Value: Enter the value associated with the name of the parameter.