To answer the Design Template portion of the question, the systems included came from a variety of sources, formerly found in the Zebase package available as an additional purchase. I don’t know the origin of each system, but they would have been named by various people or firms.

For this specific question, the Zoom Beam Expander appears to be a model for a variable beam expander that changes the expansion by various amounts over three configurations by changing the thicknesses after each of the first two doublets. If you open the file, it will only load the editor, but if you click on the Merit Function Editor or the Multi-Configuration Editor, you can see that the system has already been optimized for a few different ratios, and the variables are still labeled as such if you want to play around with it some more.