The version you have under Processes is version 3 not version 1. They look similar because version 1 did not have a real-time preview while version 3 uses the native PixInsight RTP. The process version is the one I would recommend you use. It is true that many of the YouTube tutorials reference the script version 2. Many of the concepts are the same. If you want a version 3 walk through video you could do worse that use Adam Block's which you can find on our GHS website
here. There is also comprehensive written documentation available which you can access using the documentation tool button at the bottom right of the process interface.
CS, Mike