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I'm not 100% sure, but I strongly suspect that this isn't quite right. As I understand it, invisibility here is achieved through the material, but it needs to be done through the bone properties.
Regarding the "terrible program," on one hand, everything feels awkward because you're not used to it and don't know how to work with it. On the other hand, the version we're using is quite old, and different programs do require slightly different approaches. For example, I find it extremely uncomfortable to work in ZBrush. Working on small details is actually quite pleasant, but when I need to create something specific within a specific timeframe, the program's inconvenient aspects immediately become apparent, starting with the navigation and ending with the functionality. But there aren't really any good alternatives (or rather, there are, but none of them are better for me personally), so I have to get used to ZBrush. Maybe someday I'll spend some time and customize it to suit my needs. Fortunately, this program, like most modern 3D editors, allows you to edit many things to your liking.
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And did you eventually learn how to do skinning?