Once a set of parameters has been created (or just using the five default parameters), presets can be organized.

A preset is a pre-defined set of key=value pairs that can be choosen to quickly compose an URL querystring.

you can choose a value for each or some of the parameters you have in a workspace and store that set of values assigning a human-friendly name. The preset can then be easily used so that one can quickly compose a URL query string.