Hello all

I am looking for a tutorial on how to use IconPackager in oder to make an IconPackage.
I did not see one in this section although it's titled as such, so I'm making my first post here feeling quite silly.
I downloaded today, 16 .png files which are the Icons for the Vitrex WindowBlinds theme. The download was not in IconPackager format, so I can't select to use them within the Theme Manager.
I launched up IconPackager, thinking this would be a good opportunity to learn how to use it only to find there was no help files, walkthrough and there wasn't anything that after several exploration attempts seemed to let me choose to create a new package, then select files and save them.
The "Build New Package" only seemed to let me try to change my Windows Default icons and that made it a bit more confusing.
If there is a tutorial or user-made walkthrough, would anyone please link me to it? I want very much to learn how to do this and can learn on my own, but I've hit a brick wall and now need to ask for some direction.
Thank you kindly, in advance,
Harley