The User Templates makes it possible to create your own blender templates and add them as template files to the Menu
File -> Open Template …
Sometimes your projects use very similar or even the same standard setup. So you could define your special Start Page and every time when you create a new blend file you would get all you need right away. But we found it more convenient to have multiple Start pages from which we can select one as needed. Also users can actually exchange start pages and designers who provide cloth construction kits for their mesh characters can even provide their own startpage to the users.
In the Sparkles Pro installation panel you find one user input field named user templates. Here you specify a directory anywhere on your computer. This directory can contain simple blend files of any complexity you like. All blend files found in this directory will be added to the list of user templates. The list opens up whenever you call
File -> Open Template ...
The list is currently not structured. So all your templates must be placed in your Templates Folder within a flat file hierarchy.